The Quiz: Sea stars contribute to the ecosystem as essential…
A Cleaners
B Predators
C Pollinators
Starfish are some of the few predators able to pry open the tightly closed shells of bivalves, so they’re essential for keeping notoriously invasive mussels from taking over the tidelands. But it’s all about the context: In some parts of the world, unchecked populations of hungry starfish are themselves considered a threat to the ecosystem.
The correct answer to this quiz is Predators.