2 Best Sights in Las Vegas, Nevada

Your journey through Mandalay Bay's long-running Shark Reef Aquarium begins in the mysterious realm of deep water at the ruins of an old Aztec temple. It's tropical and humid for us bipeds but quite comfy for the golden crocodiles, endangered green sea turtles, water monitors, and other 2,000 creatures in residence. Descend through two glass tunnels, which lead you deeper and deeper under the sea (or about 1.6 million gallons of water), where exotic tropical fish and other sea creatures swim all around you. The tour saves the best for last—from the recesses of a sunken galleon, sharks swim below, above, and around the skeleton ship. The Undersea Explorer VR Theater lets you swim with whales or dive with sharks. Elsewhere you'll find a petting zoo for marine life, a Komodo dragon exhibit, and a special jellyfish habitat. Animal-feeding add-ons are available.

Ever wanted to be a mermaid? The Silverton hosts classes for kids, adults, and families (with cheaper rates for kids of course). Would-be mermaids need to be strong swimmers, but equipment, including goggles, is provided. Just bring a swimsuit or towel and prepare to dive into the resort’s 117,000-gallon saltwater aquarium.