The eyes of giant and colossal squid are among the largest eyes in the history of life. It was recently proposed that sperm whale predation is the main driver of eye size evolution in giant squid, on the basis of an optical model that suggested optimal performance in detecting large luminous...
For baleen whale prey,they used acoustic(声学的) equipment to test the density (密度)of krill patches. For toothed whales, they looked at the size and quantity of squid(鱿鱼)beaks and otoliths (parts of the inner ear) found in the stomachs of beached whales. Putting all the data together...
Giant squid, any member of a genus of large, elusive cephalopods inhabiting deep regions of temperate to subtropical marine waters. Thought to be the largest or second largest living invertebrate, the giant squid has been frequently depicted as a sea mon