Fishing boat set on fire and sunk to create an artificial reef in the UK
Swimmers and paddlers can now refuel in the middle of the Potomac
Romantic evenings with sunset beach walks and gourmet dinners can be bought for $285,000 a night.
Jason deCaires Taylor creates unique sculptures that provide homes to marine life.
Guests staying at the Virgin resort can hire the Necker Nymph to explore ocean.
An underwater chasm designed for those seeking temporary disappearance.
A French artist has added a subtle message of ecological conservation to the famed Rubik's Cube.