"Hey!" he shouts back when he hears his name, surfacing again. Like Donnie, he's able to stay above for longer now, but he's having a hard time seeing anything.

And he also recognizes that noise.

Not good not good not good-

He spins, looking, looking, looking for any way out of this. If he could just find...

"Is there anything to grab!?"

Donnie has a light, maybe he can see... a ladder or some exposed piping or something.