Evolution of marine mammals to water life converges in some genes
Tuesday, January 27, 2015 - 06:30
in Biology & Nature
When marine mammals such as whales, dolphins, manatees and walruses moved from land to water, a series of physical abilities —– limbs adapted for swimming, less dense bones that make them more buoyant and a large store of oxygen relative to their body size – made it possible. Yet these animals made the transition from land to water millions of years apart.