1. Famous examples of Cnidarians are jellyfish, sea anemones, stony corals, soft corals, medusozoa, gorgonian, sea pens, and

2. Moorena Bouillonii, a chemically rich filamentous cyanobacterium, has been characterized as a pathogenic organism with an unusual ability to overgrow gorgonian corals, but little has been done to

3. Coral definition is - the calcareous or horny skeletal deposit produced by anthozoan or rarely hydrozoan polyps; especially : a richly red precious Coral secreted by a gorgonian (genus Corallium)

4. Here, we report a localized bloom of the benthic filamentous cyanobacterium Moorea Bouillonii (formerly Lyngbya Bouillonii) observed exclusively on the gorgonian (sea fan) coral Annella reticulata at around 20 m depth in Japan.

5. Moorena Bouillonii, a chemically rich filamentous cyanobacterium, has been characterized as a pathogenic organism with an unusual ability to overgrow gorgonian corals, but little has been done to study its general growth habits or its unique association with the snapping shrimp Alpheus frontalis.