pry open shells. produce a tiny light. move quickly along the sea bottom. survive the pressurized atmosphere of deep water.
I gave my students this multiple choice question: Sea stars are consumers that live in a tide pool ecosystem that is alternately submerged and exposed by tides. This type of ecosystem contains poisonous anemones and many species of shellfish. The sea star's advantage in this ecosystem is that it can

Only one answer is correct among these 4 choices:
- pry open shells.
- produce a tiny light.
- move quickly along the sea bottom.
- survive the pressurized atmosphere of deep water.

Could you tell me which one is correct?

pry open shells.