Family Haminoeidae

Shell size to 15 mm; shell almost cylindrical, very light. Spire completely sunken apex with small depression. Surface with minute, wavy spiral lines. Aperture longer than last whorl. Color white to pale-amber. Photo of live snails (from Sarasota Bay) by Ángel Valdés.

Shell size locally to 17 mm; shell very thin, almost elongate-ovate. Sculpture of very fine spiral grooves. There is an orifice on the apical region of shell, known as an apical depression. This is a very variable species; compare with H. antillarum, which is usually smaller, more rounded overall, with less well-defined spiral lines, and lacks the apical depression. Color may be translucent dirty-white, greenish, yellowish, or pink. Animal translucent with brown and black mottling and spots. The pink shell varietal in the photos was collected in June 2019 by Bruce Schulz, at Bunche Beach, Fort Myers, Florida, at low tide. Photos by James F. Kelly.

Shell size to 17 mm; shell very thin, almost globular. Sculpture of very fine spiral grooves. Color semi-transparent yellowish to whitish Compare with H. elegans (Gray, 1825), which is usually larger and has more well-defined spiral lines. Photos of live snails taken by Ángel Valdés in Sarasota Bay. Photo of stand-alone egg mass taken by Linda Shockley near Marco Island.