There is a National Geographic show on that shows another, larger species of humbolt squids in the Phillipines which are even more aggressive and dangerous....great show if you can catch it. A husband an wife team go down and are almost immediately attacked and harrassed by the squids. ....they were scientist and had a few divers in the water constantly fending off attacks. I think one shot shows the guy getting dragged down about 50 feet in about 1/2 second.....scares the bejeebers outta you.
I wish we could spend some money on deep sea exploration. Space is boring.