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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
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]
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]
A researcher fires a biopsy dart at an orca.The dart will remove a small piece of the whale's skin and bounce harmlessly off the animal. Cetology (from Greek κῆτος, kētos, "whale"; and -λογία, -logia) or whalelore (also known as whaleology) is the branch of marine mammal science that studies the approximately eighty species of whales, dolphins, and porpoises in the scientific ...
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 ...
The 2015 Ron Howard film was based on Nathaniel Philbrick’s 2000 nonfiction book of the same name, which investigates the 1820 sinking of a whaling ship that was caused by a sperm whale attack.
A humpback whale (Megaptera novaeangliae) A leopard seal (Hydrurga leptonyx). Marine mammals are mammals that rely on marine (saltwater) ecosystems for their existence. They include animals such as cetaceans (whales, dolphins and porpoises), pinnipeds (seals, sea lions and walruses), sirenians (manatees and dugongs), sea otters and polar bears.
More than 250 boats damaged, with three sunk, since attacks in Straits of Gibraltar first reported in 2020. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ...