Photis conchicola is a species of marine amphipod crustacean which lives in the Eastern Pacific Ocean. It grows to a length of 5.5 mm (0.22 in), and lives on rocky beaches among algae and surfgrass. It often inhabits discarded gastropod shells, which it attaches to marine plants.
Photis conchicola Wikipedia
Predators of P. conchicola include the fish Embiotoca lateralis. The shells used by P. conchicola are chiefly Alia carinata, Tricolia pulloides, Bittium eschrichtii, Amphissa versicolor, Lacuna marmorata and Lacuna unifasciata.