Olivella columellaris is a species of small sea snail, marine gastropod mollusk in the subfamily Olivellinae, in the family Olividae, the olives.

They use unique appendages of the propodium (front part of the foot) to deploy mucus nets which capture suspended particles from the backwash on sandy beaches of the tropical eastern Pacific.

[1] (this section compiled from [1][4][5][6][7]) Shell of oval shape, with relatively low and blunt spire and a large body whorl.

The ground color is a dark brown or olive with a varying number (0 to 3) of lighter or darker, often fading bands.

The fasciolar band (= a distinctly structured portion of the shell around the siphonal notch) is brownish gray to white.