This sap-sucking sea slug is common in the Indo-Pacific region but is often not noticed due to its camouflage. The color of its cerata depends on the algae it feeds on, but they all contain a finely branched network of digestive gland ducts. Similar to other Cyerce and Polybranchia species, Polybranchia orientalis has a defensive mechanism wherein it casts off its cerata when disturbed (they can grow back after a while). Its head and rhinophores are often concealed by the cerata.
We love macro and super macro photography and especially finding rare and special critters around
our island home. We do our best in identifying all critters on this website correctly; however, we
might make mistakes that can be present on this website.
Please keep in mind that this website is created for scuba divers, underwater photographers, and
everybody interested in marine animals. This website is created and organized from a diver’s and an
underwater photographer’s point of view. That’s why we primarily group animals together in a
meaningful way for divers and underwater photographers.
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