Dr. Lecter
Contributor
Climbing up the wall to get to the top would be a horrifying ecological disaster for everything in your path.
I am the first and loudest person to chew out those with poor buoyancy and/or no consideration for the local flora/fauna, but I think it's very clear that under those sorts of conditions, whatever damage you might do to the wall is a total non-issue.
If your survival is helped by climbing the wall, you climb the wall and the critters be damned. That said, swimming out and away is going to be a better bet most times.