Giant squid can reach up to 14m in length, with only sperm whales as predators. Goblin shark can detach its mouth from its body and live up to 1300ft deep. Vampire squid has the largest eyes of all animals, with red eyes and webbing
Octopuses have eight arms and simple suckers without secondary armature. Most octopuses have soft bodies with no internal skeleton. They have three hearts and blue blood containing copper-rich hemocyanin