The colorful clownfish is adorable with its white, black, and orange striped scales. It darts nimbly through the sea and prefers living near coral reefs, where it can hide among sea anemones and seagrass. Every now and then, the seahorse glides by, while the crab and starfish hang out on the ocean floor. These four are native to the tropics, but they’re happy to be admired by kids in the playroom.