Jellyfish and leatherback turtles

Relationship Case Study


The leatherback sea turtles are immune to a jellyfish sting. So that makes them a food source. The jellyfish cannot eat the turtles so they are harmed and the turtles benefit.


The moon jellyfish population was blooming, but there are beginning to be more leatherbacks coming into the area where the jellyfish are.


This is where one species benefits from the harm of another species. In this relationship, the jellyfish's only defense is its sting, but the leatherbacks are immune to it. Making the jellyfish a food source for leatherbacks. The jellyfish can't eat the turtles so it is only the jellyfish's population that is affected.