Once they are attached, this shark bites on the host. The upper teeth act as an anchor, while the lower jaw moves back and forth like an electric scraper. The shark then twisted and turned, until it cut out a piece of meat about 2 inches wide and 2.8 inches deep.
Cookiecutter sharks, in fact, eat medium and large sized creatures that share the same tropical habitat. Whales, dolphins, sharks, seals and bone fish have been found to have been injured by them. This frightening little beast is also known to bite submarines, underwater cables, and even humans.
Look at this next weird shark. The Longnose sawshark is one of six sword-bearing sharks that can reach 4 and a half feet long. Serrated, long noses with sharp rows of teeth make up one-third of their weight.
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