Guests will need to take a lift down to access the hotel, which is technically a vessel as it can move about to avoid storms.
Planet Ocean Underwater Hotel will sit 8.5m below the waves and will provide guests with incomparable panoramic views of the fish kingdom.
The rooms come with air conditioning and WiFi if you’ve got a burning desire to check Facebook while you’re down there.
It is now being constructed in Florida and will be moved to an undisclosed location for its first opening season.
The hotel was originally called The Poseidon Underwater Resort but went through a change of name, perhaps due to the popular disaster movie from 1972, The Poseidon Adventure.