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The toothed whales (also called odontocetes, systematic name Odontoceti) are a clade of cetaceans that includes dolphins, porpoises, and all other whales with teeth, such as beaked whales and the sperm whales. 73 species of toothed whales are described.
The country's conservation agency said Monday a creature that washed up on a South Island beach this month is believed to be a spade-toothed whale. Spade-toothed whales are the world’s rarest ...
The common name was chosen because the part of the tooth that protrudes from the gums (unlike the strap-like teeth of strap-toothed whales) has a shape similar to the tip of a flensing spade as used by 19th-century whalers. Despite the rather similar dentition, the spade-toothed whale and strap-toothed whale seem to be only distantly related.
Mesoplodont whales are 16 species of toothed whale in the genus Mesoplodon, making it the largest genus in the cetacean order. [2] Two species were described as recently as 1991 (pygmy beaked whale) and 2002 (Perrin's beaked whale), and marine biologists predict the discovery of more species in the future. [3] A new species was described in ...
The International Convention for the Regulation of Whaling is an international environmental agreement aimed at the "proper conservation of whale stocks and thus make possible the orderly development of the whaling industry". [2] It governs the commercial, scientific, and aboriginal subsistence whaling practices of 88 member states. [2]
The body of Andrews' beaked whale is robust in comparison with other members of the genus. The melon is low, and the beak is short and thick. The lower jaw is peculiar in that halfway through it rises up significantly with the teeth extending over the rostrum. The head also sometimes has a light patch on the sides, more prominent in the males.
The cross-sections of the teeth are rounded or oval. A characteristic feature is that the dentin forms in layers that alternate directions giving it a banded appearance. Their teeth are second in hardness to hippopotamus ivory. Sperm whale teeth may grow up to 20 cm (8 inches) in length while the killer whale teeth are slightly smaller.
Two right whales who’d been struck by vessels were found dead off the coast of Georgia during the most recent calving season, including one whose remains were towed 20 miles to the beach at ...