Maui Ocean Center Admission. Explore the Western Hemisphere’s largest tropical reef aquarium with full-day admission to the Maui Ocean Center. This impressive facility features more than 60 interactive exhibits, including the Sting Ray Cove and Turtle Lagoon, with close-up views of your favorite marine life. Learn about Hawaii’s incredible underwater world as you discover jelly fish, tropical reefs and octopi. To enhance your experience, trained naturalists are available for presentations at select exhibits. Book Special Offer! Maui Ocean Center Admission From $25.95.