Nudibranchs & sea slugs
NudibranchiaThe jewels of the sea — nudibranchs come in every colour combination imaginable and reward slow, careful searching. Check under overhangs, on sponges, and along hydroids. Once you spot your first, you'll start finding them everywhere.
Last updated April 2026
African chromodoridChromodoris africana4 photos
A striking chromodorid nudibranch with a blue-black body ringed in orange-yellow, endemic to West African and Macaronesian waters.
Crawls on sponge-covered rocks in Canary Islands waters — a special find for nudibranch enthusiasts visiting the eastern Atlantic.
© Jouni Kuisma
© Jouni Kuisma
© Jouni Kuisma
© Jouni Kuisma
Pyjama nudibranchChromodoris quadricolor2 photos
A striking Red Sea nudibranch banded in black, white and blue with an orange-red gill and rhinophores, often found on its red Latrunculia sponge prey.
© Jouni Kuisma
© Jouni Kuisma
Observed at
Red Sea nembrothaNembrotha megalocera1 photos
A large, spectacular nudibranch with a black body decorated with vivid red-orange patches and spots. One of the most dramatic nudibranchs in the Red Sea.
Crawls on tunicates (its food source) on reef walls — large, bold, and slow-moving, making it an outstanding photography subject.
© Jouni Kuisma
Observed at
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