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The pygmy right whale shares several characteristics with the right whales, with the exception of having a dorsal fin. Also, pygmy right whales' heads are no more than one quarter the size of their bodies, whereas the right whales' heads are about one-third the size of their bodies. [11] The pygmy right whale is the only extant member of its ...
Cetacea (/ s ɪ ˈ t eɪ ʃ ə /; from Latin cetus 'whale', from Ancient Greek κῆτος () 'huge fish, sea monster') [3] is an infraorder of aquatic mammals belonging to the order Artiodactyla that includes whales, dolphins and porpoises.
This dolphin is found mainly in the Alboran Sea and the north-western Mediterranean [13] [14] [17] [34] where its population is estimated at between 3,000 and 5,000 individuals. [2] The other pilot whale species, the long-finned pilot whale (G. macrorhynchus), seems to have been seen at least once in the Mediterranean, probably as a stray group ...
The earliest known ancestor of arctic whales is Denebola brachycephala from the late Miocene around 9–10 million years ago. [55] A single fossil from Baja California indicates the family once inhabited warmer waters. [27] [56] [57] Acrophyseter skull. Ancient sperm whales differ from modern sperm whales in tooth count and the shape of the ...
Download as PDF; Printable version ... The beluga's body size is between that of a dolphin and a true whale, with males growing up to 5.5 m (18 ft) long and weighing ...
A common bottlenose dolphin (Tursiops truncatus). A dolphin is an aquatic mammal in the clade Odontoceti (toothed whale).Dolphins belong to the families Delphinidae (the oceanic dolphins), Platanistidae (the Indian river dolphins), Iniidae (the New World river dolphins), Pontoporiidae (the brackish dolphins), and possibly extinct Lipotidae (baiji or Chinese river dolphin).
Ivan and Bessie from the 1967 novel The Day of the Dolphin or Alpha and Beta in the 1973 film adaptation; Slim and Delbert from the TV series Dolphin Cove; Snorky from the Night of the Dolphin segment of The Simpsons 2000 episode "Treehouse of Horror XI" The dolphin from the fairy tale The Dolphin; Zoom from the anime series Zoom the White Dolphin
The Irrawaddy dolphin is similar to the beluga in appearance, though most closely related to the killer whale. It has a large melon and a blunt, rounded head, and the beak is indistinct. Its dorsal fin , located about two-thirds posterior along the back, is short, blunt, and triangular. [ 7 ]