Parasitism- The boring sponge bores through the bay's oysters' shells and may kill the oyster.
Mutualism- The clownfish and the sea anenome benefit eachother. It has been suggested that the activity of the clownfish results in greater water circulation around the sea anemone. In addition to providing food for the clownfish, the sea anemone also provides safety due to its poison. The clownfish is dependent on the sea anemone for its daily bread. After the anemone paralyzes and eats a fish, the clownfish will polish off the remaining uneaten bits and pieces. In return, the clownfish helps to keep the anemone free of dead tentacles by eating these. The clown fish also helps the anemone get food by using its bright coloration to lure unsuspecting fish into the vicinity of the anemone.
Clownfish and Sea Anemone