Underwater/Seabed Vents at Anchor Point

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Testudo

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USA & Grand Cayman
Since I received a few PMs regarding a comment in another thread about finding some vents or fumaroles, I thought I would provide the details so everyone can get the info.

I found Barefoot Beach on my February trip and noticed a strong sulfur smell while there (idyllic spot btw). Figured it was just rotting sea grass or maybe a fumurole. While snorkeling the area, the water looked like it was a brine, with fresh water mixing in and blurring the area in front of my mask. But I did not see any vents, nor was I really searching for any.

Last week when we returned to Barefoot Beach I again detected a slight sulfur smell; did not think anything of it since it was not as pungent as earlier.

Then, while at Anchor Point on Friday, I happened upon the vents as I was about to end my initial anti-clockwise snorkel of the area. The vents were 10-15 yards out if that, pretty much straight out from where the "coral" stairs that lead down from the entry path end, off the ironshore. The water is maybe 4-6 feet deep where they are located. Most of the openings were between three and six inches long on the sea bed, counted 8 or 9 in total. They were rimmed with yellow (assuming Sulfur) and you could see the gas mixing/blurring with the water. The immediate vicinity had a greenish-yellowish caste and had the same blurry visibility as Barefoot Beach. The discolored water was also visible from shore, if you looked hard enough. It was a real unexpected find.

As luck would have it, I planned on taking pictures there and at Queen's Monument, but left the battery in the charger back at our condo. I'll be back at the end of the month to take some pictures in case no one else gets there before then.

I did call Mark at the DOE to report a Lionfish in the coral shoal just past the vents and mentioned them as a place marker. I called dibs on naming them Testudo's Vents.

The approximate coordinates are:
Latitude 19°21'13.93"N
Longitude 81° 8'2.52"W
Vent%20Location.jpg


Location%20of%20Testudo%27s%20Vents.jpg



Sorry, couldn't get Google Map Maker to work

Let me know if you find them.
 
These vents have been there since I first started diving that site 16 years ago (but you can keep the name :mooner:.
 
I figured they must have been known and really couldn't have opened up as a result of the recent temblors. Surprised I had never heard or read anything regarding them. ;)

But I'll keep referring to them as mine until I learn their original name. :D

Are there others located anywhere else in the vicinity?
 
A friend of mine, a diver who is also a geophysicist, found a small one in N Sound not too far from Stingray City. I suspect there are others around, although I have never seen (felt?) one.
 
"I suspect there are others around, although I have never seen (felt?) one."

To be honest, I was reluctant to stick my hand over the ejecta. I had no idea if it was hot, how hot or if it may have been acidic. I'll leave that to a professional or someone more daring than I.

My friend reports: "it was too hot to hold your hand over it for more than a couple of seconds."
 

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