These sites are not only man made but also are natural. They are the unique combination of joint efforts of nature and mankind which make the Earth a Paradise.
From barrier reefs and blue holes to seabed sculpture parks, we don our wet suits and explore 20 of the best underwater attractions.
1) Great Barrier Reef, Australia
The world’s largest coral reef system, the Great Barrier Reef, is under threat from a recently approved coal port and may be downgraded by UNESCO as an endangered World Heritage Site.
But for now this 1,400m (2,300km) reef, which can be seen from outer space, remains one of the seven natural wonders of the world. Its kaleidoscopic coral shelves are home to an abundance of marine life including turtles, sharks and more than 1,500 species of fish.
treetstreet / Thinkstock
2) Underwater Sculpture Park, Grenada
Imbued with beautiful beryl blues, Grenada’s dazzling west coast becomes all the more spectacular when you dip below the waves and discover its sunken art museum.
The Underwater Sculpture Park, featuring installations by Jason deCaires Taylor and Troy Lewis, is located on the seabed and is the first of its kind. Man on a Bike, a life-size gent cycling along a reef, and Ring of Children, a circle of kids holding hands, are among the inspiring artworks that double up as a substrate for marine life.
Grenada Underwater Sculpture Park
3) Underwater Museum, Mexico
When hurricanes and tropical storms destroyed reefs in Cancun, Mexico, authorities floated the idea of submerging 500 life-size sculptures onto the seabed to give marine life something to live upon.
In dived British artist, Jason deCaires Taylor, who created an incredible set of statues that range from sunken cars and small houses to bankers burying their heads in the sand. Spread over two sites, both can be reached by snorkelers.
Creative Commons / 2il org
4) Belize Barrier Reef, Belize
Charles Darwin described it as “the most remarkable reef in the West Indies,” a statement that still rings true today. Forming part of the Mesoamerican Barrier Reef, this underwater World Heritage Site is home to a cornucopia of marine life, including 500 species of fish and 106 species of coral.
The jewel in its crown, though, is the Great Blue Hole, a large submarine sinkhole that attracts divers and snorkelers from around the world
Purestock / Thinkstock
5) S S Thistlegorm, Egypt
Sunk by German bombers in 1941, the trains, trucks, armoured vehicles and motorcycles aboard S S Thistlegorm never made it to their intended destination of Alexandra in Egypt.