Watch his head.

3 seconds sound clip from the Friday the 13th (1980) movie soundboard.

You can hear this line at 00:24:39 in the Blu-ray version of the movie.

Quote context

[...]

- He can swim?

- I don't know.

- He's right around here somewhere. I got it.

- Go ahead, dive for him.

- There he is!

- Come on, you guys, help me.

- Watch his head.

- Careful.

- Okay.

- Watch his head!

- Got him?

- Can you give mouth-to-mouth?

- Yeah.

[...]