A nice close-up of an Eleven-armed seastar (Coscinasterias muricata), showing off the small tentacle
A nice close-up of an Eleven-armed seastar (Coscinasterias muricata), showing off the small tentacles that help keep the body clean from debris or parasites. The thorny protrusions help as a defence mechanism, which can be extended/retracted as needed. -- source link
#seastar#marine invertebrates#underwater