Nudibranchs are shell-less gastropods. They are some the most bizarre looking underwater animals found in our oceans. They can be challenging to to find due to their small size and confusing patterns. Nudibranchs are slow moving, delicate and lack a protective shell. Some are extremely distasteful and bright colors warn predators that they are toxic. Some even have the ability to ingest stinging cells and use them as a form of protection.
The best way to find sea slugs: Move slow! Search around sponges, hydroids, sea squirts, anemones, soft coral, rocks and reef ledges.
Train the eye: They can be challenging to find, I recommend tagging along with experienced divers that already have an eye for finding them.
Below are some of my favorite images of sea slugs. Photography by Shawn M Miller.
Gymnodoris nigrocolor – parasite
Chromodoris sp -space odyssey
Chromodoris annae -Ryukyu flare
Learn more about the beautiful sea slugs of Okinawa. Check out Dr. Bolland’s Website!