Clarke took up skin diving a a hobby.

But citizens appearing out of the blue in skin diving equipment are to be looked upon askance.

As a kid, I used to do a lot of skin diving, when my family went to the Caribbean for vacations.

So I ask this kid-KennyWright-ifI can maybe come visit him that weekend so I can do some more skin diving.

That was the end of my skin diving until I started astronaut training ten years later and went into the underwater zero-gee simulator.