Answer:
1.Hermit crabs are pretty easygoing about what they eat. In fact, they'll dine on just about anything they can find in the water that surrounds them, including small fish, "invertebrates such as worms, plankton and any food particles that happen to be floating by."
2.algae
3.Phytoplankton and algae form the bases of aquatic food webs. They are eaten by primary consumers like zooplankton, small fish, and crustaceans. Primary consumers are in turn eaten by fish, small sharks, corals, and baleen whales.
4.Sea urchins will eat just about anything that floats by. Its sharp teeth can scrape algae off rocks, and grind up plankton, kelp, periwinkles, and sometimes even barnacles and mussels. Sea urchins are sought out as food by birds, sea stars, cod, lobsters, and foxes.
5.star fish, shore-birds, seal, and fish
Explanation:
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