Tide pools provide a home to many interdependent plants and animals. The hermit crab lives in an old snail shell and relies on algae and kelp for food, demonstrating how species depend on each other to survive. While tide pools house sea urchins, crabs, anemones, and other creatures, visitors must be careful not to disturb the delicate ecosystem or harm the animals, as the tide pool is a fragile environment that requires protection.