Thecacera sp.

Found and photographed by Peri Paleracio
Specimen found at dive site Agahota in the Anilao region of Batangas, Philippines at 42 meters depth
Nikon D2h with 28-80 Sigma Macro in a Nexus housing and 1 Inon Z220 strobe

Thecacera sp. (undescribed)

Holy moly - this guy is amazing. Yikes - Yet another undescribed Thecacera found by Peri Paleracio. What can we say? This specis is completely different from any shown in Indo-Pacific Nudibranchs and Sea Slugs. Of the spotted Thecacera, all have dark spots on a lighter back ground. This guy is just the opposite, large orange spots on a gorgeous purple background. Wow. The white tips on the extra-rhinophoral appendages are also special. In researching this BOW, I came across a previous BOW featuring another flamboyant Thecacera sp. that was also found by Peri at the same dive spot at about the same depth. Humm, wonder what Peri knows that we don't?

I am sure the reason we have not come across either one of these two beauties is the depth Peri was diving at - 42m, that's about 126 feet. Peri, dude, be careful man. Decompression dive for sure.

Wish there was more we could tell you. Just enjoy the photo. Again - wow.

Dave Behrens
Sammamish, WA
May., 2012

Peri, and my life long diving buddy Jerry Allen relaxing between dives
Club Ocellaris, May 2006

Peri has been acting as a dive guide in the Philippines for about sixteen (16) years now. When Peri's not diving, he does Wedding Photography on the side. Peri ranks very high on my list of dive guides in the PI that can find seldom seen sea slugs. As you can see from the above image, Peri is an excellent photographer (even when using someone else's equipment). Peri is very good at recognizing and capturing the scene so as to say. Last April while relaxing on the veranda at Club Ocellaris, I noticed Peri go get his camera and wade out into the water to photograph one of the staff fishing. I wondered what was going on and then I saw what Peri was after and I ran and got my Sony HD Camcorder and took video of Peri photograhping the fisherman against a setting sun. This footage was later blended into a video on sea slugs that made the final cut into our San Diego Underwater Photographic Society film festival a couple of years ago! Imagine that! Slugs are coming into their own for sure!

When not looking for slugs, Peri also keeps his eyes peeled for other unusal inhabitants of the sea. More recently he has had an eel (Myrichthys paleracio ) named after him! An honor richly deserved!

Michael Miller
San Diego, Calif
May., 2012

Send Peri email at
Peri also has website for Wedding Photography if you are considering getting married in the Philippines

From left to right, Terry Gosliner, Angel Valdes, Dave Behrens La Jolla, Calif.

Send Dave email at

© The Slug Site, Michael D. Miller 2012. All Rights Reserved.