In 2026, the cost of an underwater hotel suite ranges from "expensive" to "astronomical." At the Atlantis, The Palm in Dubai, the "Poseidon" and "Neptune" suites—which feature floor-to-ceiling windows into an aquarium with 65,000 marine animals—typically cost between $7,000 and $10,000 per night. For a more "wild" ocean experience, The Muraka at the Conrad Maldives Rangali Island is the world's first true underwater residence; sitting 16 feet below the Indian Ocean, it usually requires a minimum 4-night stay and costs upwards of $50,000 per night. For those on a relatively "smaller" budget, the Resorts World Sentosa in Singapore offers Ocean Suites for about $1,500 to $2,500 per night. These prices usually include "white-glove" perks like a 24-hour private butler, private chef services, and airport transfers, ensuring that the high price tag covers a complete luxury experience both above and below the waterline.