I don't think the OP had the intention of wanting to dive with or around the whales. Perhaps he is searching for some guidance on good dive sites, dive centers, etc. to go diving in the greater Samana area.
dominican todayThere was an incident last week in which tourists on a whale watching trip were injured by a whale. The newspaper reports didn't make it clear whether they were in the water or on the boat when it happened. It said that the current swept them too close to the whale, which struck them so hard with its tail that a couple needed to be hospitalised.