Oh yeah, if it sunk deeper their bodies are probably crushed in. Maybe popped brains. Might as well not even search for that shyt and let it be a watery grave.99.999% chance they died days ago.
Go to the ocean depths with the Super Adventure Club
Thats the thing just because there's oxygen doesnt really mean anything. They aint responded in days. Why would they have not responded if they were in any recoverable state.