1. Neuronal GSX expression, as reported from several hydrozoan and Anthozoan species, is

2. Bouilloni is a small, gelatinous hydrozoan growing to around 2 cm (0.8 in) in width

3. Adults are omnivorous, eating insect eggs, small crustaceans, hydrozoan polyps, and algae, while the larvae eat only algae.

4. 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)

5. In hydrozoan Coelenterates, temporary gonads are formed by groups of cells in either the epidermis (outer cell layer) or gastrodermis (gut lining), depending on the species; scyphozoan and anthozoan Coelenterates generally have gonads in the gastrodermis.