This area is right next to Otter Cliffs, in fact it is right between Sand Beach and Otter cliffs. This small cliff formation has a few decent but small sequences that can keep you entertained if you just want to mess around do some real simple bouldering in Acadia.
go to Sand Beach (which is right next to Otter Cliffs) as soon as you get to the actual beach, you should see a small gathering of cliffs on the far right hand side. Make your way towards them and hike up to the top. once on top, you will see a small cove/inlet, descend down into that and you will be secluded from all the beach goers with some short and simple traverses and a few easy moves.
nothing needed, you are only 6-10 feet off of the ground