Hagfish tie their bodies into complicated knots to escape tight spots

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A pacific hagdish

Hagfish have several hearts

TOM MCHUGH/SCIENCE PHOTO LIBRARY

Hagfish literally tie themselves in knots to escape a tricky situation – and that includes tying their bodies into complicated three-twist knots.

In many ways, hagfish are extraordinary. They are long, eel-like marine animals that carry far more blood relative to their body volume than any other fish, have four hearts – and only half a jaw.


It is partly because of this last feature that it is so useful for hagfish to tie knots in their long bodies. When the animal ties a knot at its tail end and slips it along …

https://www.newscientist.com/article/2229070-hagfish-tie-their-bodies-into-complicated-knots-to-escape-tight-spots/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home