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beaked whales, dolphins and porpoises. These whales have teeth evolved to catch fish, squid or other marine invertebrates and swallow their prey whole instead of chewing it. Tooth shape can vary between groups, with cone-shaped teeth in dolphins and sperm whales, spade-shaped teeth in porpoises, peg-like teeth in belugas, tusks in narwhals and many different shapes in the ornamental teeth of male beaked whales. The teeth of female

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