In fact, though many sperm whales have been captured, few of their stomachs seemed to contain parts of giant squids. Unfortunately for scientists, but good for the rest of us, humans do not meet up with giant squids very often. Squids are thought to be open water, deep, cold sea creatures. Work by Dr. Ole Brix, of the University of Bergen, indicates the blood of squids does not carry oxygen very well at higher temperatures. A squid will actually suffocate in warm water.
Temperature also seems to affect the squid's buoyancy mechanism.
Warm water will cause a giant squid to rise to the surface and not be able to get back down. With water temperature even higher at the surface, the squid maybe doomed. It is not surprising then, that most squid groundings occur near where two ocean streams, one cold and one warm, meet. A peice of sperm whale skin damaged by squid suckers in a life and death battle. Estimates based on damaged carcasses range up to one hundred feet.