Pictures in our Past
Gallery 2: Sea-Change Marine
SC 120 CF
The operculum of a mollusc - the small door with which the animals close themselves inside their shells.
Photo by Craig Foster
Mpixels (40.5 MB uncompressed) - 4608x3072 pixels (15.3x10.2 in / 39.0x26.0 cm at 300 ppi)