Sea Slug Census 2026
Please note: if you don’t see a course, dive activity, or date listed below that works for you, email us and we can try to open a new course over your preferred time period.
Sea Slug Census 2026
March 28 - April 4

More than just a nudibranch hunt, the Sea Slug Census is a collaborative effort to document and map nudibranch diversity in Dahab and the surrounding area. Together, we’re building a regional nudi-database of which species live here, where, and when.
Participants will either help spot or take photos of sea slugs during dives and upload their findings to the public platform iNaturalist. Observations are identified and verified by the community – and occasionally lead to surprising discoveries.
April brings ideal conditions thanks to cooler water and seasonal algae blooms that often attract huge numbers of nudibranchs. Whether you’re behind a camera or just love finding tiny critters, your contribution during this time matters.
Who Can Join?
- minimum of Advanced Open Water certified
- underwater photographers (from action cams to macro pros)
- experienced spotters – or those who want to become one!
- anyone passionate about marine life, even without a camera
The Sea Slug Census will take place over 8 Diving Days and includes 2 x Day Dives + 1 Night Dive each day and is hosted by Andrey Ryanskiy and Irina Khlopunova – authors / photographers of Reef ID Books.
Participants are encouraged to join all 8 days. However if you have a shorter timeframe we can accommodate so long as you are able to start on 28 March at 8:30am.