When he swam under the boat, I thought we would lose him.

In 1970 he also became the first person to swim 1,500 meters under 16 minutes.

We only swim in the evenings, under a full moon.

I've never known a man who could swim so far under water!

You'd have to be out of your mind to go swimming under those conditions.

He could not swim or hold his head under a shower for too long because of it.

They can swim under water for 12 to 17 minutes.

Slowly, I began to swim along under the castle walls.

Meanwhile, I know how you feel after swimming under those rocks.

Then he twisted around and began swimming away, still under the surface.