Wel.. you won't see many fish by the hotel area. Baby beach is very beautiful, very nice fish there. Perhaps De Palm Island is too much of a good thing to begin with, they have very big fish (friendly) fish there and that frightens some people (who never been snorkling before) the fish at baby beach are much smaller. You could also go with a catamaran tour, they stop at 3 different spots.

Must say that De Palm Island still is one of my favorits!