Mandalay Bay Resort and Casino in Las Vegas offers walking tours that allow guests to explore the hotel's Shark Reef Aquarium. The tour takes you through the underwater tunnel, where you can see a variety of marine life, including sharks, stingrays, and sea turtles. You'll also get a chance to learn about the importance of ocean conservation and the efforts made by the aquarium to protect these species. The knowledgeable guides provide interesting facts about the different marine animals, making it an educational and immersive experience for visitors.