Marvel at the incredible Shark Reef Aquarium in the heart of the desert at Mandalay Bay Hotel and Casino on the Las Vegas Strip. Explore the 14 exhibits containing exotic and endangered fish, reptiles and — of course — sharks. Enjoy up-close views of more than 100 sharks, including 30 in the 1.3 million-gallon (4.9 million-liter) main tank, one of the largest in the US. By walking through two underwater tunnels, get an even better sense of what it's like to be under the sea.