If you’ve ever had the chance to explore a rocky intertidal ecosystem, you may have noticed quickly that all of the “cool,” colorful critters tend to reside in the deeper pool areas that are underwater, even when the surrounding rocks are exposed to the air. When many people go “tidepooling,” they are usually interested in exploring these pools because there typically resides a greater diversity of species. But have you ever wondered why it is that more species live in those pools than on the bare rocks? Or why some species can survive on the bare rocks while others seemingly cannot?
