The role of myoglobin in the evolution of mammalian diving capacity – The August Krogh principle applied in molecular and evolutionary physiology

After the Devonian tetrapod land invasion, groups of terrestrial air-breathing and endothermic mammals repeatedly went back to live in the sea, relying on air intake at the surface for extended breath-hold dives to forage underwater, often at great depths and even in the coldest oceans. Studies on the physiological mechanisms behind prolonged breath-hold diving have a long history, including August Krogh's estimates of the maximal dive duration...