A shark biting a hagfish (Courtesy of Museum of New Zealand Te Papa Tongarewa)
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What happens when a shark attacks a hagfish?

1 April 2013 Last updated at 12:47 BST

Hagfish are ancient creatures that live at the bottom of the ocean, scavenging for food.

When attacked by predators, they release a special slime to repel them. Scientists hope, one day, to make clothing out of the threads within this super-stretchy slime.

See what happens when a shark tries to bite a hagfish.

Footage courtesy of Museum of New Zealand Te Papa Tongarewa, from Hagfish predatory behaviour and slime defence mechanism.