The whale-watching season in Samana ends 30 March. Bookings, that began 15 January, are still possible through 31 March in Samana.
Thousands of humpback whales from the North Atlantic migrate to the waters of the Dominican Republic each winter to mate and give birth. Their most popular winter rendezvous is Silver Bank, the 3,000-square-kilometer reef system that is northeast of Puerto Plata. But from there many circulate to other popular areas like humans do at singles bars! One of these gathering places is Samana Bay. More than 1,500 humpbacks visit the bay, with as many as 300 present at any given time during mating season.
This is a must-do activity for all in the Dominican Republic as a tourist or as a resident.
http://dr1.com/travel/special/whales.shtml