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There are eight extant species of porpoise, all among the smallest of the toothed whales. Porpoises are distinguished from dolphins by their flattened, spade-shaped teeth distinct from the conical teeth of dolphins, and lack of a pronounced beak, although some dolphins (e.g. Hector's dolphin) also lack a pronounced beak
Dall's porpoises are prey to transient killer whales. [16] They have, however, been observed in association with resident killer whales, engaging in apparent play behaviors with their calves, and swimming with them. [17] One recognizable Dall's porpoise was observed travelling with the AB pod of resident orca from May through October 1984. [17]
This WikiProject is about cetaceans - that's whales, dolphins and porpoises to you and me. The aim of the project is to write a good description of every known cetacean species out there - all 90 of them [ 1 ] , one of which is possibly extinct .
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 ...
There are approximately 89 [8] living species split into two parvorders: Odontoceti or toothed whales (containing porpoises, dolphins, other predatory whales like the beluga and the sperm whale, and the poorly understood beaked whales) and the filter feeding Mysticeti or baleen whales (which includes species like the blue whale, the humpback ...
A spate of dolphin attacks on swimmers in Japan’s Fukui Prefecture is being blamed on one bottlenose dolphin, who researchers believe may be particularly lonely, having been separated from a pod.
Orcas, or “killer whales,” can grow up to 27 feet long and weigh as much as six tons. Known as the ocean’s top predator, they’re extremely intelligent, with their own languages of clicks ...
The false killer whale has been known to interact non-aggressively with some dolphins: the common bottlenose dolphin, the Pacific white-sided dolphin (Lagenorhynchus obliquidens), the rough-toothed dolphin (Steno bredanensis), the pilot whales, the melon-headed whale, the pantropical spotted dolphin (Stenella attenuata), the pygmy killer whale ...