i'm a biology/environmental science major and taking marine zoology at the moment and honestly cepholpoda (squids and octopi, slugs, clams and muscles, etc.) are one the most diverse phylum because squids and slugs and the clams you eat are all related and also squids are also very strong and a medium sized squid around 4 feet could rip a person apart easily but squids often find people interesting and apparently find our eyes "interesting" for lack of a better word as they will stare into a humans eye for long periods of time.