Adhesive Sea Anemone - Cryptodendrum adhaesivum
A bit of a dark picture but still showing this unique anemone with some Sexy Shrimps (Thor amboinensis) at the bottom and some and some Peacock-tail anemone shrimps on top (Periclimenes/Ancylocaris brevicarpalis).
''Cryptodendrum'' is a genus of sea anemones in the family Thalassianthidae. It is monotypic with a single species, ''Cryptodendrum adhaesivum'', also commonly known as the adhesive anemone, pizza anemone, and nap-edged anemone. Like all symbiotic anemones it hosts ''zooxanthellae'', symbiotic algae that help feed their host.