Semicassis (Semicassis) granulata centiquadrata. (Valenciennes, A., 1832) Panamic Bonnet Shell size 33 - 83 mm Sea of Cortèz, W Mexico - Peru; Galápagos. CONDITION: F /GEM - COLLECTED LIVE - WITH OPERCULUM. | eBay!
"Shells are Swell – Beautiful Examples of Seashell Photography, by Warren Krupsaw" -- This is one of the most beautiful examples of pearlescence that I've come across. Click through for gorgeous shell photos, with an essay about how to photograph shells.