Dolphin Cruise from The Florida Aquarium in Tampa Bay. The Florida Aquarium in Tampa Bay is offering cruises aboard a 72-foot, 130-passenger catamaran, officially named Bay Spirit II. The Aquarium has partnered with the Tampa Port Authority in order to bring this important project to life. Also included is admission to the Florida Aquarium. Book now and Save: 6% Dolphin Cruise from The Florida Aquarium in Tampa Bay.