Thecacera sp. 2

Image courtesy of Mike Bartick
Anilao,Batangas, Philippines

Thecacera sp. 2 (Undescribed)

We have featured this awesomely gorgeous critter on Mike's site three times: Thecacera sp 2 (BOW 645); Thecacera sp 2 (BOW 953); Thecacera sp 2(BOW 1100)), previously. Rarely seen by the average diver in the Philippines because it is a deep-water species. Mike's photo here is simply fantastic, showing the details of this species hermaphroditic copulation. ,

Also observed in Bali, Indonesia this deep-water species feeds on arborescent bryozoans on sandy bottoms. Participants at this years Crystal Blue Nudibranch Workshop in Anilao, Batangas, Philippines, will definitely be looking for it, and the workshop leader, Terry Gosliner of the California Academy of Sciences and co-host Jim Anderson will be hoping to collect specimens for sequencing and description.

Dave Behrens
Sammamish, WA 98074
Mar., 2023
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May 2023 - Nudibranch Festival

MAY 10-20, 2023

Citizen Science Nudibranch Workshop with special guests Dr. Terry Gosliner, senior curator of invertebrate zoology and geology from the California Academy of Sciences and Jim Anerson, well known Webmaster of Diving and learning wrapped into one complete workshop. Join us as we attempt to break records searching for new species of Nudibranchs and sea slugs. Learn natural history of Nudibranchs, photo coaching and plan to have fun.

Send Mike Bartick email at for reservation information.

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

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