National Shell Museum’s Marine Biologist Chris Whitt photographed this shell of a Horse Conch, Triplofusus giganteus. In sandy areas, large shells become good homes to organisms that only live on hard structures. The shell surface of that Horse Conch shell was occupied by a number of other organisms, including barnacles, Common Atlantic Slipper Snails (Crepidula fornicata), and even a cluster of gastropod egg capsules, probably of the Gulf Oyster Drill, Vokesinotus perrugatus.