As with all of my images posted here, they are for your enjoyment and are not public domain, all are copyrighted. Please do not copy, download, post online, or reuse in any fashion the photographs that I have posted without express written permission to do so. Any use of my images must be approved in writing. To access the images I have posted, you must click on the subject heading link above. By doing so, your action serves as legal recognition of my stated copyright restrictions, it signifies your willingness to use the images only after written permission is provided, and it acknowledges that failure to follow the rules is a violation of international copyright law. Thank you for your cooperation.
Crabs, shrimp, and lobsters are in the order Decapoda. Subterranean habitats around the world have their fair share of decapods inhabiting them but I have always been interested in the groundwater shrimp. North America has a few species and they are all imperiled to differing degrees. With the cave work that I do, I’ve been excited about photographing any of the native species and I got my chance with Palaemonetes antrorum (family Palaemonidae). A friend with the United States Fish and Wildlife Service allowed me to photograph a few specimens. They ranged in size from 1.5-2cm (about 1/2 to 3/4 inches) in total length. The species is endemic to Texas and the IUCN currently categorizes the Balcones Cave Shrimp or the Texas Cave Shrimp (P. antrorum) as EN (endangered). After the photoshoot, I had a fair amount of material that I was reasonably happy with. I’ve posted a number of examples here.

Pretty much opaque…

I noticed that they like to lift their bodies up off the substrate and typically have a leg or two not in contact with it.

I like that you can see their digestive system through their carapace.



It is really interesting to watch these guys cruising the water column.

Looking down on them...


This is a good example of a shrimp resting on a couple of walking legs while the others are stuck out into the water column.



I like ventral shots because they tell you a bit about the body plan of the subject.

Hovering in the water column

October 4th, 2009 at 7:48 am
cool blog
October 4th, 2009 at 3:21 pm
I bookmarked this link. Thank you for the good job!
November 21st, 2009 at 12:51 am
Fantastic shots of these shrimp! Once again your photography brings these animals into perfect view. Great job Dante!
February 13th, 2010 at 7:43 pm
Thanks so much for the great comments. I’ve wanted to see these shrimp for a long time and really enjoyed the photo shoot. I’m captivated by the way these things swim. What great wildlife!
August 24th, 2010 at 4:10 pm
Wonderful creatures and brilliant photography! Is this species from Ezel’s Cave?
August 27th, 2010 at 2:00 pm
Hi,
Yes, Palaemonetes antrorum can be observed in Ezell’s Cave, Texas. Thanks for the comments!
Cheers,
Dante