Hermit crabs get artificial shells from helping humans

Xeni Jardin: BoingBoing reader Jayson Franklin says:

"This article describes an attempt to make artificial (plastic) 'shells' to be left on the beach for wild hermit crabs. 30% of hermit crabs have shells that are too small for them, and must often resort to using refuse for housing."
Link to The Hand Up Project: Attempting to Meet the New Needs of Natural Life-Forms [via Boing Boing]