Stones With Holes at Charmouth Beach 11 – Beach stone with holes made by marine invertebrates at Charmouth, Dorset, England. The larger rounder holes have been made by boring bivalve molluscs such as Hiatella arctica and the smaller holes by marine polychaete worms like the Polydora spp.
Jessica's Nature Blog 
Are these rocks worth anything? I have a huge rock that was found by my florida home and have kept it for years thinking it’s cool. Just wondering if it’s worth anything
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I don’t think there is any monetary value to such stones, Vanessa, just an aesthetic and academic one.
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