Marine creatures are animals that live in the ocean. Two examples of marine creatures are the OCTOPUS and the SEAL. The OCTOPUS is a cephalopod mollusk with eight arms and no internal or external skeleton. It is known for its intelligence and ability to camouflage itself. The SEAL is a carnivorous mammal that lives in the ocean and has a streamlined body and flippers. Seals are also known for their swimming abilities and vocalizations.