An Example of Co-evolution in the Ocean
One well-known example of co-evolution in the ocean is the relationship between sea anemones and clownfish. Sea anemones are sessile animals attached to the ocean floor, while clownfish are small, brightly colored fish that live among them.
The sea anemone provides the clownfish with protection from predators and access to food, while the clownfish helps keep the anemone clean and free of parasites. Over time, some anemones have developed stinging cells that are harmless to clownfish but deter other predators. In return, clownfish have evolved a thick mucus layer that protects them from the anemone’s stings.
Other examples include cleaner fish and their clients, coral and algae, and brittle stars and sea urchins.