What was the first ocean animal on earth?

A certain creature that has died from water pollution? What animals prey on bats? What should you buy a chameleon? How can I treat my betta fish with damaged fins to help them heal and prevent further damage? When are wild dogs most active, considering their nocturnal nature? How can I effectively get rid of fleas in the drain? What animal lives in a gam? Is the wombat a placental animal? Can saber toothed deer kill humans? What are some strategies for keeping lean cats healthy and active? Why do you think that different animals have differeny life cycle? What is similar about a force and a net force? What are some some examples of carivores? What does aclarinet look like? Are stuff animals real? What is a group of quial called? Why is my cat losing hair in one spot? What do you call the group of people eating normal food? Are monkeys the smartest animals on earth? Is feces considered to be a nitrogenous waste of animals?