Starfish are found living in all of the worlds oceans. From tropical habits to cold sea floors. There are about 2,000 different types of starfish. They live can live as far as 20,000 feet below. Starfish has a diet of open clams and oysters. Starfish have a unique way of digesting their food. Starfish have a sac-like stomach that emerges from their mouth that crawls into the shells of clams and oysters. Once inside it mutates the prey to digest it, and then the stomach goes back to the body. Starfish breath through their feet. Their tube like feet are consisted of a thin tissue, allowing gases to flow through with ease. The tube feet and papulae allow for transport of oxygen from seawater to the starfish tissues. A interesting and fun fact about starfish is that they have no brain and blood. Their nervous system is spread through their arms.
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| Lateral Canals: Long tube that runs down each arm. The tube and feet are connected. |
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| Central disk: Very center of Starfsih body. This is the mouth |
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| Pyloric caeca: Is to secrete enzymes that that help with digesting food |
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| Gonads: This is where the sex cells are produced |
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