Narcotic effects of inert gases. Similar to Nitrous oxide in narcotic effect. Same as above for divers. High pressure Human dives to 600m with use of special gas mixtures. May be more enzymes that function well at many different pressures.
Diving animals are more elastic - compressability in whales.
Pressure effects of membranes Proteins ionization of weak acids. Inc pressures tend to favor dissociation of weak acids and bases. P also effects velocity constants of chemical reactions Nerve transmission rates. Muscle contractions Gene expression and transcription embryonic development. Experiments into effects of pressure on animals are hard to do and intensive studies are underway.