Summary[edit] Description: Italiano: Conchiglie del gasteropode Homalopoma sanguineum, spiaggia della Riserva Naturale di Torre Flavia English: Shells of Homalopoma sanguineum from the Natural Reserve of Torre Flavia (Ladispoli), Latium, Italy. One of the shells was inhabited by a hermit crab, and has been replaced where it was. Date: 1 September 2021, 11:15:39. Source: Own work. Author: Albarubescens.