Basking Ridge Diver
Contributor
What if the direction of shore is not clear, like you were on a a dusk dive and now it is dark and there are high waves and the "divers eyes and ears" are no longer reliable? And what about the activity of sharks and other predators as your robust, intrepid "decent diver" struggles (hopefully) in the general direction of shore? And it is not always easy to go ashore when you finally find it, if there are cliffs and high waves.
The dive operation should NOT have left the diver behind no matter how good a diver!
I wear a compass on my wrist for that very reason when diving in the Atlantic - head West. Eventually you will hit the shore line.