In this extract from the new book Blue Machine: How the Ocean Works, oceanographer Helen Czerski explains the ingenious way turtles contend with the extreme saltiness of the sea.
'This is the cost of living in seawater': The ingenious and (to us) heartbreaking way turtles survive the salty oceans : Read more
'This is the cost of living in seawater': The ingenious and (to us) heartbreaking way turtles survive the salty oceans : Read more