Is it?  I know also that underwater diving has physiological influences on air breathing animals. There are some physiological adaptations made underwater, both during dives where a person holds their breath, and also dives involving breathing a suitable gas supply.
Its called the Physiology of underwater diving,sensational indeed!
I enjoy scuba diving Oh do you? Apparently the word scuba is short for self contained underwater breathing apparatus! The first time I went under water with the mask, I felt claustrophobic and was panicky Oh I see.  Apparently there can be psychological effects due to being immersed in water and being in high ambient pressure. It is definitely a very different sensation
Physiology of underwater diving is the physiological influences of the underwater environment on the physiology of air-breathing animals, and the adaptations to operating underwater, both during breath-hold dives and while breathing at ambient pressure from a suitable breathing gas supply.