I didn't stay at the Los Suenos Marriott Ocean & Golf Resort in Costa Rica, but I did travel from Montezuma to Jaco (which is close to where the hotel is) via water taxi and we saw dolphins in the ocean along the way. They were following behind the boat and jumping in the wake. Very cool. The boat is a regular taxi service that runs between the two for $30.

Costa Rica also has lots of other cool wildlife to see like monkeys and sloths. Well worth a trip.

Greg