Adhesive anemone

Cryptodendrum adhaesivum

''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.
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).
Mark's pic.
Cabilao, 2012.

https://www.jungledragon.com/image/91343/adhesive_sea_anemone_-_cryptodendrum_adhaesivum.html Cryptodendrum,Cryptodendrum adhaesivum,Fall,Geotagged,Philippines

Appearance

This anemone grows to a size of 30 centimeters and is distinguished by its colored, beaded and waving curved edge. It has two different forms of tentacles. At the center of the oral disc, it has narrow, short, about 5 mm long, tentacles that are branched with five or more "fingers", like a small, inflated rubber glove. The tentacles are extremely sticky. The tentacles at the edge have a bubble-like thickening of about one millimeter diameter at the end. The two types of tentacles are usually different colors.
Adhesive Sea Anemone - Cryptodendrum adhaesivum With close up of the Peacock-tail anemone shrimp on top (Periclimenes/Ancylocaris brevicarpalis).
Mark's pic.
Cabilao, 2012. Cryptodendrum,Cryptodendrum adhaesivum,Fall,Geotagged,Philippines

Naming

The two different tentacles and pizza crust type edge distinguish ''C. adhaesivum'' from superficially similar ''Stichodactyla'' specimens.

Distribution

''C. adhaesivum'' is widely distributed being found in tropical waters from the Indian Ocean to the Western Pacific.

References:

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Taxonomy
KingdomAnimalia
DivisionCnidaria
ClassAnthozoa
OrderActiniaria
FamilyThalassianthidae
GenusCryptodendrum
SpeciesC. adhaesivum
Photographed in
Philippines