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Oliva Sayana Ravenel, collected on sand bar near Black Island, St. Joseph Bay, Florida, July, 1999 (52 mm.) | Digital images By Jim Miller

I recently found two of these washed ashore walking with my pug on Del Mar Dog Beach. It's unusual to find big pretty shells like this!

1 to 1.618 over and over and over again.The Fibonacci sequence. A mathematical sequence discovered in the 12th century. A pattern appears in nature over and over again… The curve of a wave, spiral of sea shell, segments of a pineapple. The universe is made of precise patterns and proportions. Everything is connected. Only some can see how the pieces fit together. .golden ratio seen in seashell

sea urchins - have several in my 'shell' collection, but none in this colour range! Beautiful texture!

Sand Dollars photograph by *omnia* on Flickr. The term sand dollar (or sea cookie or snapper biscuit in New Zealand, or pansy shell in South Africa) are species of extremely flattened, burrowing sea urchins belonging to the order Clypeasteroida. Some species within the order, not quite as flat, are known as sea biscuits. Related animals include other sea urchins, sea cucumbers and starfish.