Ghost Pirates of the Sea-erra Madre

You hurry back towards the exit to the cave system, but in your panic you take wrong terms a few times.

Finally, you see the entrance to the cave. You swim towards it and try to fit through, but somehow wedge yourself halfway in, completely incapable of going further into or out of the hole. As you slowly lose consciousness due to lack of oxygen you hope that, unlike the skeleton in the caves, someone finds your body and the underwater camera strapped to your arm.
End Of Story