Also known as devil squid because of the bright red color they sometimes display: Humboldt squid have on occasion attacked divers. But mostly they hunt in packs for fish. Mostly. (What's up Aliens reference?! 😉 )

If you want a more detailed account of Scott Cassell's squid attack-- https://www.youtube.com/watch?v=9Fkl312lldQ

Monterey Bay Aquarium footage: https://www.youtube.com/watch?v=X2aa6aHEyUI