Thursday, August 6, 2009
One of a kind dive!
This morning SHBL’s divers left the dock early at 8AM to visit the Backside of the Ocean Blue Hole. The reason for the early morning was due to the changing of the tides in order to see the ancient underwater riverbed, the mixing zone, and the “Spider Webs”.
Due to the change of tides, divers witness an underwater riverbed and a mixing zone while diving the Backside of the Blue Hole. During outgoing tide, fresh water from the interior of Andros Island migrates to the Blue Hole through connection cracks and fissures as a result of the tidal lag or the freshwater hydraulic gradient, causing denser saltwater, forming two layers. During our rainy season the denser saltwater is cooler than the above salt water by as much as 5 degrees Celsius. This allows divers to visually see 2 levels of water and what appears to be an underwater river!
The third phenomenon is “Spider Webs” or what they have also been affectionately referred to as “Whale snot”. During low tide, the decaying vegetation, which was deposited in the Blue Hole thousands of years ago, breaks down into hydrogen sulfide which is eaten by small marine life. The digestion of the hydrogen sulfide creates spider-like webs of organic material which can range in size from a few inches long to well over 20ft. in length.
This is by far one of the most unique dives Small Hope has to offer,and is the only dive like this in the Bahamas! Many divers this morning commented, “They never experienced any dive like this before”. Follow this link to watch a video on the Backside of the Blue Hole and for more information on our Blue Holes and other dives offered at Small Hope click here. Pin It Now!