Underwater hotels are unique accommodations located beneath the surface of the water, offering guests a chance to experience marine life up close. These hotels often feature large glass windows, allowing visitors to view fish and other sea creatures while enjoying their stay. Some popular examples include the Poseidon Undersea Resort in Fiji and the Jules' Undersea Lodge in Florida. Guests at underwater hotels can enjoy various amenities, such as restaurants, spas, and recreational activities like diving and snorkeling. These hotels are designed to provide a luxurious experience while promoting awareness of ocean conservation and the importance of protecting marine ecosystems.