This was in sand at Gazer. The photo was identified on iNaturalist as O. carneola. Many olive species have highly variable shells, but I am leaving the ID tentative. Oliva carneola from the Marshalls differs in its relatively consistent shell coloration, lighter colored animal and higher spire.
The one below from Anilao Pier may also be a form of Oliva carneola.
Created 13 February 2020
Updated 16 June 2025