Polluted water: It’s where sea snakes wear black
A reptile may be an evolutionary counterpart to dark moths in sooty areas
![turtle-headed sea snake](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2017/08/081017_SM_sea-snake_main.jpg?fit=860%2C460&ssl=1)
DARK MARK This dark form of a turtle-headed sea snake is shedding its skin, and maybe some toxic trace metals along with it.
C. Goiran