Except if they have made it to the surface and now they can't open the submersible to get new air. In theory they could be suffocating whilst bobbing along the surface. That is of course a big if they have somehow made it to the surface and not been spotted yet.
Except if they have made it to the surface and now they can't open the submersible to get new air. In theory they could be suffocating whilst bobbing along the surface. That is of course a big if they have somehow made it to the surface and not been spotted yet.