What role do sea otters play in coastal ecosystems?
A They act as predators of kelp forests.
B They help control sea urchin populations.
C They are top predators of fish.
Fact: Sea otters feed on sea urchins, which can devastate kelp forests when their populations are unchecked. By maintaining a balanced sea urchin population, sea otters play a crucial role in the health of coastal ecosystems.
Correct Answer: They help control sea urchin populations.