We just returned from Aruba and spent two afternoons at Boca Catalina. Entry is very easy with a shallow sandy bottom and you can swim over to where the dive boats anchor very easily. Water is only 10-15 feet deep at the reef, and easy to see and swim with the fish. I had a problem with positive buoyancy and couldn't stay down easily; I suggest a 5-10 pound weight belt. Just off the rocky shore was the same pod of cuttlefish that I had seen two years ago. Great for snorkeling and just lying on the beach.