div'ing re"flex

a reflex of humans, other mammals, reptiles, and birds, triggered by immersion in cold water, that slows the heart rate and diverts blood flow to the brain, heart, and lungs: serves to conserve oxygen until breathing resumes and to delay potential brain damage.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

diving petreldiving suit


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