Swim with dolphins during your virgin islands vacation take the ferry from st john to tortola island for a 45 minute dolphin encounter at dolphin discovery tortola side by side with expert trainers hop into the water to play with these amazing marine mammals spin around the playpen during a foot push ride and hold onto their fins and cruise through the water during a dorsal tow youll be amazed by their thrilling displays of aquatic agility and grace numbers are limited to 10 during this