Hermit Crabs Queue Up by Size to Swap Houses

by Owen James Burke

Screen Shot 2015-02-06 at 10.00.14 AM

Screenshot taken from BBC One – Life Story

I’ve always wondered how hermit crabs select the “right” new home in the wild. Amazing as this orchestration may be, it makes sense.

One BBC commenter wrote of once stumbling upon a hermit crab with no shell:

I once saw a homeless hermit crab in the beach so I found a bunch of shells and lined them up – he then tried each one by one, some were too small others too big until he found the perfect one and wandered off! I was mesmerised (and felt like a successful real estate agent)

Sir Attenborough narrates for BBC One:

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