They then looked at the challenges that warmer oceans delivered for crustaceans, molluscs, sponges,
deep sea invertebrates, the warm and cold water
corals that provide habitat for one - fourth of the ocean's variety, the pelagic or surface - swimming fish, and the demersal or
deep -
sea denizens that live longer, reproduce more
slowly and are thus less likely to evolve and adapt to changing conditions.