Although they aren’t technically fish, sea stars are animals that are still present in nearly every coastal habitat and can be found as low as the abyssal layer. You can identify a starfish by its bumpy skin and flat center surrounded by long limbs that give the appearance of a star.
Sea turtles are large, air-breathing reptiles that inhabit tropical and subtropical seas throughout the world. Their shells consist of an upper part (carapace) and a lower section (plastron). Hard scales (or scutes) cover all but the leatherback, and the number and arrangement of these scutes can be used to determine the species.
Dolphins are aquatic mammals that belong to the infraorder “Cetacea” a group of animals that includes whales, dolphins, and porpoises. They also belong to the parvorder “Odontoceti,” which are the toothed cetaceans.
