Recent Work

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Giant Black Sea Bass

I took this image of a Black Sea Bass in the California Channel Islands. The fish was several hundred pounds and about 5ft long. He swam up to me, gave me time to take a couple of images and then took off at high speed. I was pretty lucky...

Crinoid Shrimp (Periclimenes amboinensis)

Cronoid shrimps come in a wide range of colors that match their hosts coloration. The examples here show how well their colors match. The shrimp form a commensal relationship with crinoids (Feather Stars). Crinoids are a type of Echinderm that live on reefs around the Indo-Pacific. A number of...

About Us

UWportraitWelcome to Thalassagraphics a website devoted to underwater photography. We have images from the Indo-Pacific region and California – enjoy the various galleries on display and let me know what you think.

I currently use the following equipment for my underwater work:
Nauticam D7100 Housing
Ikelite DS-125 strobes (current model from Ikelite is DS-160)
Nikon 105mm macro, Tokina 10-17mm zoon, Nauticam SMC converter.

Jon Bertsch

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Recent Blog Posts

August 17, 2014 |

Crinoid Shrimp (Periclimenes amboinensis)

Cronoid shrimps come in a wide range of colors that match their hosts coloration. The examples here show how well their colors match. The shrimp form a commensal relationship with crinoids (Feather Stars). Crinoids are a type of Echinderm that live on reefs around the Indo-Pacific. A number of other organisms have evolved to live on the crinoids – small crabs, fish and other critters.      ...

April 24, 2013 |

Sawblade Shrimp (Tozeuma armatum)

Following a steep sandy shore we dropped down to about 90 ft, heading out to a small group of black corals that were swaying in the current. The waters around Dumaguete where we were diving are nutrient rich and a perfect area to see healthy black corals. We were looking for the Sawblade shrimp that make these their homes and within a few moments had quickly located a large number of them on the corals. Working quickly I photographed some individuals that were living near the edges of the coral fronds before moving back up the reef and out of the current. Tozeuma armatum is an inhabitant of the Indo-Pacific Ocean and can be...

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