Crocodile

The coast guard stopped after four days. Those are the rules, they say.

The family called you after that. Someone who brings drowned people up out of the water. In this line of work they call you a crocodile.

Three tanks, one day of light. Down there you cannot see two meters ahead, and a fourth dive is more than the body will take.

Keep looking and you find this out: where he went in and where they said he went in are two different places.