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Tuesday, April 5, 2016

Glorious


Glorious Top Shell (Calliostoma gloriosum), photographed 2 April 2016

The northern geographic range limit for this species is often listed as San Francisco, but I've found several specimens broken shells like this one — washed ashore in the Bodega Bay area during the last 12 years. 

Glorious Top Shells are supposedly more common in deeper water, so perhaps they occur offshore, and it takes a lot of wave energy (like we've experienced this winter) to push them onto the beach?

P.S.  Recently, I've shown two other top snails Channeled Top Snail (Calliostoma canaliculatum) and Purple-ringed Top Snail (Calliostoma annulatum), but I have yet to show the most common top snail in this area, Blue Top Snail (Calliostoma ligatum).  Some day!

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