* Fish: There are over 30,000 species of fish, including tuna, salmon, trout, and tilapia.
* Reptiles: Sea turtles, snakes, and crocodiles are all reptiles that live in the ocean.
* Birds: Albatrosses, penguins, and petrels are all birds that live in the ocean.
* Invertebrates: Crabs, lobsters, shrimp, and squid are all invertebrates that live in the ocean.