You get to make only one mistake in diving and EOD..................
The other thing that caught my eye...
“The juveniles believed the discussion was in regards to going back down into the ‘cave’ and whether or not they had enough air in their tanks to complete their dive.
How long did the previous dive take? Standard gear is a watch to track amount of air left. And if time of dive is over the time on watch...get out and try again later.