Feeling crabby: Citizen scientists document creatures

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Kathy Mason, Daniel Wilkinson and Julie Wilkinson hold a Horseshoe Crab shell and a warning sign.

Kathy Mason, Daniel Wilkinson and Julie Wilkinson hold a Horseshoe Crab shell and a warning sign.

Horseshoe Crabs are a unique species, a fossil-like invertebrate with shells the size of a steering wheel and spiky tails.

During the spring and fall, a local volunteer group, Horseshoe Crab Watch, sco…