Sea nettles are a type of jellyfish found in Chesapeake Bay. They eat comb jellies. Comb jellies eat oyster larvae. How would you describe the relationship between sea nettles and oysters? It is competition, because the oyster larvae are harmed and the sea nettles benefit. It is mutualistic, because both the sea nettles and the oysters are benefitting. It is parasitic, because the sea nettles cause the oysters harm. It is predation, because both organisms are eating the comb jellies.