Fish, such as tuna, swordfish, and sharks
Marine mammals, such as dolphins, seals, and sea lions
Seabirds, such as albatrosses, gulls, and pelicans
Reptiles, such as turtles and crocodiles
Cetaceans, such as whales and porpoises
Even other cephalopods, such as giant squid and octopuses
In addition to these predators, cephalopods are also susceptible to various parasites and diseases.