Home > Invertebrates > Shells > Sundials > Heliacus areola areola

Updated 9/7/2025

Family Architectonicidae

INDO-PACIFIC / HAWAII / TROPICAL EASTERN PACIFIC

Heliacus areola areola



Mokapu, Oahu, 2 feet
 

Makapu'u tidepool, Oahu 

 
Variegated Sundial, Oahu  
   

AREOLA SUNDIAL

Uncommon with zoanthids on shallow reefs exposed to wave action.  Cream with brown or black beaded spirals.  Attains diameter of 0.7 inch, 18 mm.  Red Sea to Hawaii and Ecuador.  Formerly confused with Heliacus variegatus.