Cockle
Fig. 17: A half shell of a cockle washed up on the beach — Nikon D70, AF Nikkor Micro 105mm f/2.8, Tarifa, Spain, May 2005 Nikon D70; Δt=1/400 s; f=105 mm; f/16.0; ISO 200; 5 May 2005 17:38:12