Home > Invertebrates > Shells > Nerites > Smaragdia bryanae

Created 12/6/2025

Family Neritidae

HAWAII - ENDEMIC

Smaragdia bryanae




Kahala, Oahu, 10 feet, 2-4 mm

Kawaihae, Hawaii
   

BRYAN'S SEAGRASS NERITE

Uncommon on leaves of the endemic seagrass Halophila hawaiiana on silty sand in shallow water, and the introduced Halophila decipiens in deep water to a much lesser degree.  It leaves transparent scars behind as it consumes the plant.  Color and pattern varies between individuals.  Attains 0.2 inch, 5 mm.  Endemic to Hawaii.