snorkeling around the island is not so good as the beach turns into turtle grass and nothing much to see. The Split is the best place, one can see rays, assortment of fish and under the cement wall in the channel on the bottom are always nurse sharks. You have to see what time of day is slack tide unless you are a very strong swimmer. I am not sure but it may be possible to Kayak to the reef if you have permission, most folks wont allow you to take canoes etc to the reef. You would also need to go to the marine reserve office and pay your park fee.