Home > Invertebrates > Shells > Muricidae > Vexilla vexillum

Updated 12/1/2025

Family Muricidae

INDO-WEST PACIFIC / HAWAII

Vexilla vexillum

Ala Moana, Oahu, 3 feet, 22 mm

 

Makapu'u tidepool, Oahu

 

On Rock-boring Urchin, Makapu'u intertidal, Oahu

 

  

FLAG or RIBBON VEXILLA

Uncommon beneath Rock-boring urchins in shallow water exposed to surf.  It is parasitic, sucking bodily fluid from the host urchin.  The shell is dull and fades after death.  Attains 1 inch, 25 mm.  South Africa to Hawaii and the Tuamotus.