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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
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 ...
The Battle of the Porpoises (Portuguese: Batalha das Toninhas) is the name given to a military blunder involving the Brazilian Navy in the Gibraltar Strait, near the end of the First World War. [ 1 ] While on patrol for potential German submarines, the crew of the Bahia slaughtered a passing shoal of porpoises , mistaking them for the periscope ...
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 .
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.
Cetacean bycatch (or cetacean by-catch) is the accidental capture of non-target cetaceans such as dolphins, porpoises, and whales by commercial fisheries. [1] Bycatch can be caused by entanglement in fishing nets and lines, or direct capture by hooks or in trawl nets. Cetacean bycatch is increasing in intensity and frequency. [2]