Enjoy a unique opportunity to explore a truly extraordinary collection of marine habitats and aquarium exhibits—lagoons, caves, coral formations and breathtaking underwater ruins featuring marine animals from dolphins and sea lions to sharks, rays, barracuda, to piranha, eels and even endangered alligator gar. Atlantis features the largest open-air marine habitat in the world, second only to Mother Nature, encompassing 14 lagoons, eight million gallons of salt water and more than 50,000 aquatic animals representing over 250 marine species.