Her hands reached for him, and they both sank below the water.

When it sank below a certain level, was life itself worth the having any longer?

It can sink below the surface and move along under water.

He allowed the end of it to sink below the surface.

They sank below the windows, and the door on the other side of the car opened.

She laughed and sank a hand below the water line.

And sometimes he would just sink below the tune, beyond the words.

Then he sank below the surface, not slowly, but as a dead weight.

If the bell is heavy enough it will sink below the water.

The plane sank below the surface of the lake within minutes.