I took this photo a few days after discovering our first nudibranch. The eye-catching fluorescent green made it easy to spot on the base of our Lobo coral.
Despite how beautiful it is, we believe it to be a Zoanthid-eating Nudibranch and have had some Zoanthids disappear recently, so we dispose of any we find. It has been a more than a week since I took this photo, and thankfully haven’t seen any more.