They have webbed feet to help them swim.
How Do Sea Turtles Adapt To Their Environment?
By having a shell to protect their soft body
It eats sea grass so it doesn't grow to long
Shell to protect body
Little fins to swim and hold breath for ages then go up above water then breath then under water again!
Over many years, sea turtles adapted to their environment, with fins instead of what land turtles have.
Over many years adaptation sets in.