By Mikey Jones
These creepy pictures look to be straight from the set of a horror movie – 90 feet under water!
With misty gas and sunken branches silhouetted against torchlight the photos betray a foreboding atmosphere beneath the waves.
In one of the pictures a human skull appears to be buried in the mud.
The mist is created by hydrogen sulphide becoming trapped between fresh and sea water.
The dive was captured by New Jersey scuba instructor Troy Iloski in the Yucatan Peninsula in Mexico.
Troy, 50, said: “When I first saw this place I was amazed by its beauty and tranquillity.
“From the top it does not look like much but the deeper you dive the more amazing it becomes.
“The most special feature of this sink hole is the clouds of hydrogen sulphide, at around 90 feet, that look like an underwater river.
“The hydrogen sulphide is trapped between the lighter freshwater above and the denser seawater below and is produced by sulphate reducing bacteria.”