Animals living under very high pressure in water....how do they manage...is there any special enzyme??

Aquatic creatures living in great depths are mainly composed of high density solids and liquids and haveno air inside their bodies. Unlike Air, Solids and liquids are incompressible. They exert an equal and opposite force to the pressure of seawater against their bodies, thus keeping the animal from being squeezed.

Also recent comparative studies have shown that pressure sensitivities of enzymes, structural proteins, and membrane-based systems differ markedly between shallow- and deep-living species. So we can say that proteins have different pressure senstivity in aquatic species.