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Skin deep: Aquatic skin adaptations of whales and hippos evolved independently


Credit: Carl Buell
A new study shows that the similarly smooth, nearly hairless skin of whales and hippopotamuses evolved independently. The work suggests that their last common ancestor was likely a land-dwelling mammal, uprooting current thinking that the skin came fine-tuned for life in the water from a shared amphibious ancestor. The study is published today in the journal
Current Biology and was led by researchers at the American Museum of Natural History; University of California, Irvine; University of California, Riverside; Max Planck Institute of Molecular Cell Biology and Genetics; and the LOEWE-Centre for Translational Biodiversity Genomics (Germany).
How mammals left terra firma and became fully aquatic is one of the most fascinating evolutionary stories, perhaps rivaled only by how animals traded water for land in the first place or by the evolution of flight, said John Gatesy, a senior research scientist in the American Museum of Natural History s Divis ....

United States , Maksim Plikus , Matthew Collin , Christian Guerrero , Michael Mcgowen , Mark Springer , Raul Ramos , Michael Hiller , Matthias Huelsmann , John Gatesy , Kerri Danil , Hessen State Ministry Of Higher Education , Max Planck Institute Of Molecular Cell Biology , Kyungpook National University , University Of California , Pew Charitable , Simons Foundation Grant , National Institutes Of Health , Postdoctoral Fellowship Program , American Museum Of Natural History , National Oceanic , Atmospheric Administration , Smithsonian Museum Of Natural History , Max Planck Society , Us National Science Foundation , Current Biology ,

Biologists devise new way to assess carbon in the ocean