Dolphin

For other uses, see Dolphin (disambiguation).
Genera
See article below.

Dolphins are aquatic mammals related to whales and porpoises. The name is from Ancient Greek δελφίς delphis meaning "with a womb", viz. "a 'fish' with a womb".

The word is used in a few different ways. It can mean:

  1. Any member of the family Delphinidae (oceanic dolphins),
  2. Any member of the families Delphinidae and Platanistoidea (oceanic and river dolphins),
  3. Any member of the suborder Odontoceti (toothed whales; these include the above families and some others),
  4. Used casually as a synonym for Bottlenose Dolphin, the most common and familiar species of dolphin.

In this article, the second definition is used.

Porpoises (suborder Odontoceti, family Phocoenidae) are thus not dolphins in our sense. Orcas and some related species belong to the Delphinidae family and therefore qualify as dolphins, even though they are called whales in common language.

There are almost 40 species of dolphin in 17 genera. They vary in size from 1.2 m (4 ft) and 40 kg (88 lb) (Maui's Dolphin), up to 9.5 m (30 ft) and 10 tonnes (the Orca). Most species weigh about 50 to 200 kg (110 to 440 lb). They are found worldwide, mostly in the shallower seas of the continental shelves, and all are carnivores, mostly eating fish and squid.

The family Delphinidae is the largest in the Cetacea, and relatively recent: dolphins evolved about 10 million years ago, during the Miocene.

Taxonomy

Six animals in the family Delphinidae are commonly called "whales" but are strictly speaking dolphins. They are sometimes called "blackfish":

Hybrid Dolphins

In 1933, three strange dolphins were beached off the Irish coast; these appeared to be hybrids between Risso's Dolphin and the Bottlenose Dolphin. This mating has since been repeated in captivity and a hybrid calf was born. In captivity, a Bottlenose Dolphin and a Rough-Toothed Dolphin produced hybrid offspring. In the wild, Spinner Dolphins have sometimes hybridised with Spotted Dolphins and Bottlenose Dolphins. In the wild, bands of males of one dolphin species have been observed to mate with lone female Spinners. Blue Whales, Fin Whales and Humpback Whales all hybridize in the wild. Dall's Porpoises and Harbour Porpoises have hybridized in the wild. There has also been a reported hybrid between a beluga and a narwhal. See also wolphin.

Evolution and anatomy of dolphins

Dolphins, along with whales and porpoises, are descendants of land-living mammals, most likely of the Artiodactyl order. Modern dolphin skeletons have two small rod shaped pelvic bones thought to be left-over hind legs. They entered the water roughly 50 million years ago. See evolution of cetaceans for the details.

Dolphins have a fusiform body, adapted for fast swimming. The head contains the melon, a round organ used for echolocation. In many species, the jaws are elongated, forming a distinct beak; for some species like the Bottlenose, there is a curved mouth that looks like a fixed smile. Teeth can be very numerous (up to 250) in several species. The dolphin brain is large and has a highly structured cortex, which often is referred to in discussions about their high intelligence.

Their teeth are arranged in a way that works as an array or antenna focusing the incoming sound, making it easier for them to pinpoint the exact location of an object.

The basic coloration patterns are shades of gray with a light underside and a distinct dark cape on the back. It is often combined with lines and patches of different hue and contrast. See individual species articles for details.

Dolphin behavior

Dolphins in balance.

Dolphins are widely believed to be amongst the most intelligent of all animals. A typical statement would be that dolphins are roughly as intelligent as a two-year-old human. However, experts in comparative psychology or animal cognition would be reluctant to make any such estimate, as quantitative comparisons of intelligence between species are notoriously difficult to make in principle. Straightforward comparisons of species' relative intelligence are complicated by differences in sensory apparatus, response modes, and nature of cognition; furthermore, the difficulty and expense of doing experimental work with a large marine animal mean that even such tests as can meaningfully be done have still not been done, or have been carried out with inadequate sample size and methodology. See the Dolphin intelligence article for more details.

Dolphins often leap above the water surface, sometimes performing acrobatic figures (e.g. the spinner dolphin). Scientists aren't quite certain about the purpose of this behavior, but it may be to locate schools of fish by looking at above water signs, like feeding birds. They could also be communicating to other dolphins to join a hunt, or attempting to dislodge parasites. Perhaps they just do it for fun. Play is a very important part of dolphins' lives and they can often be observed playing with seaweed or playfighting with other dolphins. They have even been seen harassing other creatures, like seabirds and turtles. Frequently dolphins will accompany boats, riding the bow waves.

They are also famous for their willingness to occasionally approach humans and playfully interact with them in the water. In return, in some cultures like in Ancient Greece they were treated with welcome; a ship spotting dolphins riding in their wake was considered a good omen for a smooth voyage. There are many stories of dolphins protecting shipwrecked sailors against sharks by swimming circles around the swimmers.

Dolphins are social animals, living in pods (also called "schools") of up to a dozen animals. In places with a high abundance of food, schools can join temporarily, forming an aggregation called a superpod; such groupings may exceed 1000 dolphins. The individuals communicate using a variety of clicks, whistles and other vocalizations. They also use ultrasonic sounds for echolocation.

Dolphin leaping in the air.

Membership in schools is not rigid; interchange is common. However, the animals can establish strong bonds between each other. This leads to them staying with injured or ill fellows for support.

Because of their high capacity for learning, dolphins have been employed by humans for any number of purposes. Dolphins trained to perform in front of an audience have become a favorite attraction in dolphinaria, for example SeaWorld. Dolphin/Human interaction is also employed in a curative sense at places where dolphins work with autistic or otherwise disabled children. The military has employed dolphins for various purposes from finding mines to rescuing lost or trapped persons. Such military dolphins, however, drew scrutiny during the Vietnam War when rumors circulated that dolphins were being trained to kill Vietnamese Skin Divers.

In May 2005, researchers in Australia discovered a cultural aspect of dolphin behaviour: Some dolphins (Tursiops aduncus) teach their offspring to use a tool. The animals break off sponges and put them onto their mouths thus protecting the delicate body part during their hunt for fish on the seabed. Other than with primate simians, the knowledge to use a tool is mostly handed over only from mothers to daughters. The technology to use sponges as mouth protection is not genetically inherited but a taught cultural behaviour.

In captivity, many dolphins seem to have committed suicide. They either do so by repeatedly slamming their head against the pool walls or other solid objects or simply by not coming up for air anymore. Probably one of the best known cases of dolphin suicide is that of a dolphin named Cathy, one of the bottlenose dolphins that performed in the television series Flipper. She most likely died of self induced asphyxiation in the presence of her trainer Richard O'Barry.[1]

Compare also: whale behavior

Senses

Most dolphins have acute eyesight both in and out of the water and their sense of hearing is far above our own. Though they have a small ear opening on each side of their head it is believed hearing underwater is also if not exclusively done with the lower jaw which conducts the vibrations to the middle ear via a fat filled cavity in the lower jaw bone. Hearing is also used for echolocation which seems to be an ability all dolphins have. The dolphin's sense of touch is also well-developed.

However, they seem to lack a well-developed sense of smell, but they most likely can taste and do show preferences for certain kinds of fish. Since dolphins spend most of their time below the surface in the wild, just tasting the water could act as a sense of smell.

Feeding

Dolphins are predators, chasing their prey at high speed. The dentition is adapted to the animals they hunt: Species with long beaks and many teeth forage on fish, whereas short beaks and lesser tooth count are linked to catching squid. Some dolphins may take crustaceans. Usually, the prey is swallowed whole. The larger species, especially the orca, are capable of eating marine mammals, even large whales. There are no known reports of cannibalism amongst dolphins.

Individual species may employ a number of methods of hunting:

Dolphin lore


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Individual species may employ a number of methods of hunting:. In early 2003, Fender Musical Instruments Corporation made a deal with Gretsch, and began manufacturing and distributing new Gretsch guitars. There are no known reports of cannibalism amongst dolphins. In recent years, Fender Musical Instruments Corporation has branched out into making and selling acoustic guitars, and has purchased a number of other instrument firms, including the Guild Guitar Company, the Sunn Amplifier Company, and other brands such as SWR bass amplifiers. The larger species, especially the orca, are capable of eating marine mammals, even large whales. Fender guitars have been the instrument of choice for hundreds of noted artists including Jimi Hendrix, Eric Clapton, Stevie Ray Vaughan, Ritchie Blackmore, and Keith Richards. Usually, the prey is swallowed whole. On nearly every stage in the country, small or large, featuring blues, country and western or rock and roll, it is common to see a Fender guitar or bass in the hands of one or more of the musicians, amplified through a Fender amplifier.

Some dolphins may take crustaceans. The core of its instrument line, the Tele, Strat, P-Bass, and J-Bass, remains largely unchanged from the 1950s and 1960s originals. The dentition is adapted to the animals they hunt: Species with long beaks and many teeth forage on fish, whereas short beaks and lesser tooth count are linked to catching squid. Early Japanese Fender and Squier Stratocasters are well-regarded, and are now traded on the used-guitar market as JV, or 'Japanese Vintage'. Dolphins are predators, chasing their prey at high speed. These inexpensive models are now manufactured in China and Indonesia. Since dolphins spend most of their time below the surface in the wild, just tasting the water could act as a sense of smell. The name adorns many inexpensive guitars based on Fender designs but with much cheaper construction (for instance, poplar, basswood and agathis replace ash and alder for the bodies - in those cases where the body is made of solid wood, because quite a good deal of Squiers feature plywood bodies - and the maple necks are of a lower grade).

However, they seem to lack a well-developed sense of smell, but they most likely can taste and do show preferences for certain kinds of fish. The brand name, 'Squier', (previously a string manufacturer bought up by Fender) has been used in the early 1980s to produce (in Japan) cheaper, original Fender guitars to combat the frighteningly accurate copies from Japanese manufacturer Tokai and, later, with the production moving to Korea, for student-grade versions of Fender designs, of varying manufacture and often wildly fluctuating quality. The dolphin's sense of touch is also well-developed. The older and American-built Strats are by far the most favoured, but Japanese Fenders are now highly regarded as well: Fenders built in Ensenada, Mexico took over for the early Japanese guitars as the downmarket counterparts to the American models, while more recent Japanese Fenders are now mainly for the Japanese market, as counterparts to the American-made Fenders, and with only a small number marked for export. Hearing is also used for echolocation which seems to be an ability all dolphins have. Fender manufactures its highest quality models in the United States and Japan, but also has extensive manufacturing facilities in China and Mexico for downmarket models, such that a new guitar with the name, 'Fender Stratocaster,' can be purchased for roughly the same dollar amount today as in 1954. Though they have a small ear opening on each side of their head it is believed hearing underwater is also if not exclusively done with the lower jaw which conducts the vibrations to the middle ear via a fat filled cavity in the lower jaw bone. Behind the Fender name, the Fender Musical Instruments Corporation has continued to grow, and to add a wider range of products to its catalogs, while still keeping with traditional designs from the company's early years.

Most dolphins have acute eyesight both in and out of the water and their sense of hearing is far above our own. In 1985, initiated by a company employee named William Schultz, the Fender Electric Instrument Manufacturing Company was bought from CBS by its own employees, and renamed Fender Musical Instruments Corporation. Compare also: whale behavior. After selling the Fender company, Leo Fender designed products for Music Man and later founded the G&L company which manufactures top quality electric guitars and basses designed by Leo Fender. She most likely died of self induced asphyxiation in the presence of her trainer Richard O'Barry.[1]. The so-called "Pre-CBS cult" refers to the popularity of Fenders made before the sale. Probably one of the best known cases of dolphin suicide is that of a dolphin named Cathy, one of the bottlenose dolphins that performed in the television series Flipper. Maverick) had been little more than attempts to squeeze profits out of factory stock.

They either do so by repeatedly slamming their head against the pool walls or other solid objects or simply by not coming up for air anymore. Musiclander) and Custom (a.k.a. In captivity, many dolphins seem to have committed suicide. In addition, previous models such as the Swinger (a.k.a. The technology to use sponges as mouth protection is not genetically inherited but a taught cultural behaviour. However, the sale is often now looked back upon unfavorably, due to the perception that CBS favored numbers and profit over quality; the culmination of this occurred in 1983, when the Stratocaster received a short-lived redesign without a second tone control and a bare-bones output jack. Other than with primate simians, the knowledge to use a tool is mostly handed over only from mothers to daughters. At first, the sale was a taken as a positive development, considering CBS' ability to bring in money and personnel.

The animals break off sponges and put them onto their mouths thus protecting the delicate body part during their hunt for fish on the seabed. Fender's sale to CBS had far-reaching implications. In May 2005, researchers in Australia discovered a cultural aspect of dolphin behaviour: Some dolphins (Tursiops aduncus) teach their offspring to use a tool. In early 1965, Leo Fender sold his company to the Columbia Broadcasting System, or CBS. Such military dolphins, however, drew scrutiny during the Vietnam War when rumors circulated that dolphins were being trained to kill Vietnamese Skin Divers. See the article on the Fender Telecaster for more details of the Fender company's early history. The military has employed dolphins for various purposes from finding mines to rescuing lost or trapped persons. At that point Leo renamed the company the "Fender Electric Instrument Company." The service shop remained open until 1951, although Leo Fender did not personally supervise it after 1947.

Dolphin/Human interaction is also employed in a curative sense at places where dolphins work with autistic or otherwise disabled children. Kauffman remained unconvinced, however, and they had amicably parted ways by early 1946. Dolphins trained to perform in front of an audience have become a favorite attraction in dolphinaria, for example SeaWorld. By the end of the year, Fender had become convinced that manufacturing was more profitable than repair, and he decided to concentrate on that business. Because of their high capacity for learning, dolphins have been employed by humans for any number of purposes. Production began in 1945 with Hawaiian lap steel guitars (incorporating a patented pickup) and amplifiers, which were sold as sets. This leads to them staying with injured or ill fellows for support. By the early 1940s, he had partnered with another local electronics enthusiast named Clayton Orr (Doc) Kauffman, and they formed a company named "K & F Manufacturing Corp." to design, manufacture, and sell electric instruments and amplifiers.

However, the animals can establish strong bonds between each other. He became intrigued by design flaws in current musical instrument amplifiers, and he began custom-building a few amplifiers based on his own designs or modifications to designs. Membership in schools is not rigid; interchange is common. The business also sidelined in carrying records for sale and the rental of self-designed-and-built PA systems. They also use ultrasonic sounds for echolocation. (Technical note: at the time, most of the above were simply variations on a few simple vacuum-tube circuits). The individuals communicate using a variety of clicks, whistles and other vocalizations. As a qualified electronics technician, Leo was asked to repair not only radios, but phonograph players, home audio amplifiers, public address systems and musical instrument amplifiers.

In places with a high abundance of food, schools can join temporarily, forming an aggregation called a superpod; such groupings may exceed 1000 dolphins. The company began as "Fender's Radio Service" in late 1938 in Fullerton, California, USA. Dolphins are social animals, living in pods (also called "schools") of up to a dozen animals. . There are many stories of dolphins protecting shipwrecked sailors against sharks by swimming circles around the swimmers. Its headquarters are in Scottsdale, Arizona, with manufacturing facilities in Corona, California, and OCONUS manufacturing facilities in Ensenada (Mexico), Korea and Japan. In return, in some cultures like in Ancient Greece they were treated with welcome; a ship spotting dolphins riding in their wake was considered a good omen for a smooth voyage. Other popular and/or notable Fender instruments include the Mustang, Jazzmaster, Jaguar, Starcaster, Duosonic, and Bronco guitars; basses such as the Jazz Bass, the 'Telecaster Bass' reissue of the original 1950s Precision Bass; a line of lap steels, and the Fender Rhodes electric piano.

They are also famous for their willingness to occasionally approach humans and playfully interact with them in the water. While other companies and luthiers had produced electric guitars since the late 1920s, nearly all were either hollow-body guitars with pickups attached, or more specialized instruments such as Rickenbacker's solid-body Hawaiian lap steel guitars. Frequently dolphins will accompany boats, riding the bow waves. Fender offered the first mass-produced solid-body Spanish-style electric guitar, the Telecaster (originally named the 'Broadcaster', 'Esquire' is a single pickup version); the first mass-produced electric bass, the Precision Bass (or P-Bass); and the enormously popular Stratocaster guitar (or 'Strat' for short). They have even been seen harassing other creatures, like seabirds and turtles. Fender is particularly important because of its role in bringing solidbody electric guitars to the masses. Play is a very important part of dolphins' lives and they can often be observed playing with seaweed or playfighting with other dolphins. The Fender Musical Instruments Corporation, initially named the Fender Electric Instrument Manufacturing Company, was started by Leo Fender in the 1940s, and is one of the most widely recognised manufacturers of electric guitars, electric basses and amplifiers.

Perhaps they just do it for fun. Zone. They could also be communicating to other dolphins to join a hunt, or attempting to dislodge parasites. VI. Scientists aren't quite certain about the purpose of this behavior, but it may be to locate schools of fish by looking at above water signs, like feeding birds. Telecaster. the spinner dolphin). Performer.

Dolphins often leap above the water surface, sometimes performing acrobatic figures (e.g. Precision. See the Dolphin intelligence article for more details. Mustang. Straightforward comparisons of species' relative intelligence are complicated by differences in sensory apparatus, response modes, and nature of cognition; furthermore, the difficulty and expense of doing experimental work with a large marine animal mean that even such tests as can meaningfully be done have still not been done, or have been carried out with inadequate sample size and methodology. Jaguar. However, experts in comparative psychology or animal cognition would be reluctant to make any such estimate, as quantitative comparisons of intelligence between species are notoriously difficult to make in principle. Jazz.

A typical statement would be that dolphins are roughly as intelligent as a two-year-old human. Badtz-Maru Bronco Bass[2]. Dolphins are widely believed to be amongst the most intelligent of all animals. Swinger. See individual species articles for details. Toronado. It is often combined with lines and patches of different hue and contrast. J5 Telecaster.

The basic coloration patterns are shades of gray with a light underside and a distinct dark cape on the back. Telecaster Deluxe. Their teeth are arranged in a way that works as an array or antenna focusing the incoming sound, making it easier for them to pinpoint the exact location of an object. Telecaster

    . The dolphin brain is large and has a highly structured cortex, which often is referred to in discussions about their high intelligence. Super Strat. Teeth can be very numerous (up to 250) in several species. Fat Strat.

    In many species, the jaws are elongated, forming a distinct beak; for some species like the Bottlenose, there is a curved mouth that looks like a fixed smile. Yngwie Malmsteen Stratocaster. The head contains the melon, a round organ used for echolocation. Stevie Ray Vaughan Signature Stratocaster. Dolphins have a fusiform body, adapted for fast swimming. Robert Cray Standard Stratocaster. See evolution of cetaceans for the details. Mark Knopfler Stratocaster.

    They entered the water roughly 50 million years ago. John Mayer Stratocaster. Modern dolphin skeletons have two small rod shaped pelvic bones thought to be left-over hind legs. Jimmie Vaughan Tex-Mex Stratocaster. Dolphins, along with whales and porpoises, are descendants of land-living mammals, most likely of the Artiodactyl order. Jeff Beck Stratocaster. See also wolphin. Hello Kitty Stratocaster[1].

    There has also been a reported hybrid between a beluga and a narwhal. Eric Johnson Stratocaster. Dall's Porpoises and Harbour Porpoises have hybridized in the wild. Eric Clapton Stratocaster. Blue Whales, Fin Whales and Humpback Whales all hybridize in the wild. Buddy Guy Polka Dot Stratocaster. In the wild, bands of males of one dolphin species have been observed to mate with lone female Spinners. David Gilmour: owner of Strat #0001, formerly owned by Homer Haynes (a very early Strat in a custom color, but it was NOT the first Stratocaster ever made).

    In the wild, Spinner Dolphins have sometimes hybridised with Spotted Dolphins and Bottlenose Dolphins. Stratocaster

      . In captivity, a Bottlenose Dolphin and a Rough-Toothed Dolphin produced hybrid offspring. Starcaster. This mating has since been repeated in captivity and a hybrid calf was born. Showmaster. In 1933, three strange dolphins were beached off the Irish coast; these appeared to be hybrids between Risso's Dolphin and the Bottlenose Dolphin. Mustang.

      They are sometimes called "blackfish":. Musicmaster. Six animals in the family Delphinidae are commonly called "whales" but are strictly speaking dolphins. LTD. . Fender Lead Series. The family Delphinidae is the largest in the Cetacea, and relatively recent: dolphins evolved about 10 million years ago, during the Miocene. Katana.

      They are found worldwide, mostly in the shallower seas of the continental shelves, and all are carnivores, mostly eating fish and squid. Jazzmaster. Most species weigh about 50 to 200 kg (110 to 440 lb). Jaguar. They vary in size from 1.2 m (4 ft) and 40 kg (88 lb) (Maui's Dolphin), up to 9.5 m (30 ft) and 10 tonnes (the Orca). Jag-Stang. There are almost 40 species of dolphin in 17 genera. Electric XII.

      Orcas and some related species belong to the Delphinidae family and therefore qualify as dolphins, even though they are called whales in common language. Duo-Sonic. Porpoises (suborder Odontoceti, family Phocoenidae) are thus not dolphins in our sense. Cyclone. In this article, the second definition is used. Custom. It can mean:. Coronado.

      The word is used in a few different ways. Bronco. "a 'fish' with a womb". Broadcaster. The name is from Ancient Greek δελφίς delphis meaning "with a womb", viz. Dolphins are aquatic mammals related to whales and porpoises.

      In the William Gibson short story Johnny Mnemonic and the film by the same name (starring Keanu Reeves), cyborg dolphins were used in war-time by the military to find submarines and, after the war, by a group of revolutionaries to decode encrypted information. One of the mates of the ship is named Akeakamai, in honor of the real-life dolphin from Louis Herman's animal language research. In the book Startide Rising by author David Brin, the spaceship Streaker is manned by neo-dolphins (dolphins genetically engineered to match human intelligence). In one scene, the dolphins' misbehavior elicits the following quote from Zissou: "Son of a bitch, I'm sick of these dolphins.".

      In The Life Aquatic with Steve Zissou, marine researcher Zissou (played by Bill Murray) has trained reconaissance dolphins which apparently are temperamental and rarely follow their instructions. In seaQuest, Darwin the dolphin could communicate with English speakers using a vocoder, an invention that translated the clicks and whistles to English and back. Mike and the 'Bots then quickly apoligize. While doing so, the SOL gets blasted by a ship that turns out to be piloted by dolphins.

      In the Mystery Science Theater 3000 episode "Devil Fish," Mike and the 'Bots mock dolphins. Their logo depicts an aqua-colored bottlenose dolphin wearing an American football helmet and jumping in front of a coral-colored sunburst. An American National Football League (NFL) team is named the Miami Dolphins. A book called The Music of Dolphins was written by Karen Hesse, about a girl who had lived with dolphins since the age of four.

      Ecco the Dolphin stars in a series of games for the Sega Genesis/Mega Drive, Game Gear, Sega Dreamcast and PlayStation 2. After study at the Dolphins Plus research center in Key Largo, Florida, fantasy author Ken Grimwood wrote dolphins into his 1995 novel Into the Deep, including entire chapters written from the viewpoint of his dolphin characters. See Races from The Hitchhiker's Guide to the Galaxy. Their story is told in So Long, and Thanks for All the Fish.

      However, their behavior was misinterpreted as playful acrobatics. In The Hitchhiker's Guide to the Galaxy, dolphins are the second most intelligent creatures on Earth (after mice) and tried in vain to warn humans of the impending destruction of the planet. The television show was based on a 1963 film, and remade as a feature film in 1996 starring Elijah Wood and Paul Hogan (actor), as well as a television series running from 1995-2000 starring Jessica Alba. The popular television show Flipper, created by Ivan Tors, portrayed a dolphin in a friendly relationship with two boys, Sandy and Bud; a kind of sea going Lassie, Flipper understood English unusually well and was a marked hero: "Go tell Dad we're in trouble, Flipper! Hurry!" The show's theme song contains the lyric no one you see / is smarter than he.

      Foraging - A recent study reported that wild bottlenose dolphins (Tursiops) in Western Australia use sponges to forage in the sea bed for food.[2]. Stunning - using the echolocation melon, very loud clicks are directed at prey, stunning them. Fish Wacking - where the dolphin uses its fluke to strike the fish, stunning it and sometimes sending it clear out of the water. Corralling - where fish are chased to shallow water where they are more easily captured.

      Herding - where a superpod will control a school of fish while individual members take turns plowing through the herd, feeding. Short-finned Pilot Whale, Globicephala macrorhynchus. Long-finned Pilot Whale, Globicephala melas. False Killer Whale, Psudoorca crassidens.

      Pygmy Killer Whale, Feresa attenuata. Killer Whale, Orcinus orca. Melon-headed Whale, Peponocephalia electra. La Plata Dolphin (Franciscana), Pontoporia blainvillei.

      Genus Pontoporia

        . Indus River Dolphin, Platanista minor. Ganges River Dolphin, Platanista gangetica. Genus Platanista
          .

          Chinese River Dolphin (Baiji), Lipotes vexillife. Genus Lipotes

            . Boto (Amazon River Dolphin), Inia geoffrensis. Genus Inia
              .

              Family Platanistoidea, River Dolphins

                . Short-finned Pilot Whale, Globicephala macrorhynchus. Long-finned Pilot Whale, Globicephala melas. Genus Globicephala
                  .

                  False Killer Whale, Pseudorca crassidens. Genus Pseudorca

                    . Pygmy Killer Whale, Feresa attenuata. Genus Feresa
                      .

                      Killer Whale, Orcinus orca. Genus Orcinus

                        . Melon-headed Whale, Peponocephalia electra. Genus Peponocephalia
                          .

                          Irrawaddy Dolphin, Orcaella brevirostris. Australian Snubfin Dolphin, Orcaella heinsohni. Genus Orcaella

                            . White-Beaked Dolphin, Lagenorhynchus albirostris.

                            Peale's Dolphin, Lagenorhynchus australis. Pacific White-Sided Dolphin, Lagenorhynchus obliquidens. Hourglass Dolphin, Lagenorhynchus cruciger. Dusky Dolphin, Lagenorhynchus obscurus.

                            Atlantic White-Sided Dolphin, Lagenorhynchus acutus. Genus Lagenorhyncus

                              . Fraser's Dolphin, Lagenodelphis hosei. Genus Lagenodelphis
                                .

                                Risso's Dolphin, Grampus griseus. Genus Grampus

                                  . Hector's Dolphin, Cephalorhynchus hectori. Heaviside's Dolphin, Cephalorhynchus heavisidii.

                                  Commerson's Dolphin, Cephalorhynchus commersonii. Chilean Dolphin, Cephalorhynchus eutropia. Genus Cephalorynchus

                                    . Rough-Toothed Dolphin, Steno bredanensis.

                                    Genus Steno

                                      . Striped Dolphin, Stenella coeruleoalba. Spinner Dolphin, Stenella longirostris. Pantropical Spotted Dolphin, Stenella attenuata.

                                      Clymene Dolphin, Stenella clymene. Atlantic Spotted Dolphin, Stenella frontalis. Genus Stenella

                                        . Atlantic Humpbacked Dolphin, Sousa teuszii.

                                        Chinese White Dolphin (the Chinese variant), Sousa chinensis chinensis. Indo-Pacific Hump-backed Dolphin, Sousa chinensis

                                          . Genus Sousa
                                            . Tucuxi, Sotalia fluviatilis.

                                            Genus Sotalia

                                              . Southern Rightwhale Dolphin, Lissiodelphis peronii. Northern Rightwhale Dolphin, Lissodelphis borealis. Genus Lissodelphis
                                                .

                                                Bottlenose Dolphin, Tursiops truncatus. Genus Tursiops

                                                  . Short-Beaked Common Dolphin, Delphinus delphis. Long-Beaked Common Dolphin, Delphinus capensis.

                                                  Genus Delphinus

                                                    . Family Delphinidae, oceanic Dolphins
                                                      . Suborder Odontoceti, toothed whales
                                                        . Used casually as a synonym for Bottlenose Dolphin, the most common and familiar species of dolphin.

                                                        Any member of the suborder Odontoceti (toothed whales; these include the above families and some others),. Any member of the families Delphinidae and Platanistoidea (oceanic and river dolphins),. Any member of the family Delphinidae (oceanic dolphins),.

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