Blunt nose six-gill shark

From Openwaterpedia

noun - The bluntnose sixgill shark, often simply called the cow shark, is the largest hexanchoid shark, growing to 4.8 m (16 ft) in length. This shark is one of the commonly studied deep-sea sharks due to students using bait (tuna or carrion) to do tests to see how deep-sea fish find their food in the lightless world of the deep sea.

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