From staying in a luxury hotel suite to five-star dining, to even posting a letter, you can now do these, and more, underwater.
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The Underwater Museum of Art opened in 2009 in the waters surrounding Cancun, Isla Mujeres and Punta Nizuc.
It has over 500 sculptures that depict daily life in the 21st century and act as a reef structure for local marine life. View this ghostly underwater world by scuba diving or snorkelling.
The first all-glass undersea restaurant in the world, at Conrad Maldives Rangali Island, Ithaa boasts an amply stocked underwater wine cellar with about 20,000 bottles.
Pack more effort into that “wish you were here” postcard by mailing it from this post office, 3m under water and 50m from the shore in Vanuatu’s Hideaway Island Marine Sanctuary.
Deposit special waterproof postcards here and qualified divers who double as postal staff will collect and mail them
Be pampered beside stingrays and other undersea dwellers in the world’s first underwater spa in the Maldives.
Besides the view, come for the Lime Light Ritual that combines coconut, lime and minerals, a massage and a soak in the relaxation pod.
Come for the world-famous mermaid shows – underwater – re-enactments of Hans Christian Andersen’s The Little Mermaid.
The park has been luring families for as long as 60 years and also offers kayaking, canoeing and river-boat cruises.
For a cool £5,500 (US$7,266) a night, guests can enjoy stunning views of the 65,000 sea animals in the aquarium.
This three-storey-high suite also comes with floor-to-ceiling windows and an excellent 24-hour butler service – just ask Khloe Kardashian.
With furniture and architecture alike drawing inspiration from the sea and its inhabitants, this underwater restaurant is the hotel’s space of choice for champagne breakfasts, wine tastings and destination dining.
Adrift some 250m from shore, Underwater Room, a three-storey suite, comes with a landing deck, lounge area, open-air freshwater shower and an eco-friendly toilet system.
But its real highlight is a 360-degree view of fish and marine life. With virtually no light pollution, the night sky here offers double the viewing pleasure.
This aquarium aims to take visitors on an educational and immersive underwater journey beginning in China and through aquatic habitats around the world.
One of the largest in Asia, it is also home to the world’s longest underwater tunnel at 155m
Prepared using only the freshest ingredients from the region, the cuisine is not the only highlight of this restaurant, which was developed in conjunction with Cat Cora, the first and only female Iron Chef on Iron Chef America.
Located within the S.E.A Aquarium, Ocean Restaurant also offers a stunning view of the aquarium’s Open Ocean habitat.
Traverse the crystal-clear waters of the Caribbean in this submarine of a hotel. For upwards of £175,000 (US$231,500) a night, the slick sub is staffed by a captain, chef and butler, whose quarters are at the other end of the vessel to ensure optimal privacy.
Text: Hannah Koh/SilverKris