Amazing Crabs Shell Exchange | Life Story | BBC Earth

Amazing Crabs Shell Exchange | Life Story | BBC Earth



hermit crabs use abandoned seashells as mobile homes as a crab grows its shell becomes an ever tighter fit so eventually a crab needs to move in to a bigger one suitable empty shells are few and far between and this one is far too spacious for this crab but instead of continuing its search this small crab settles down to wait other crabs also looking to upgrade to a bigger home soon gather whenever a shell washes ashore unfortunately the new shell is too big for them to despite that the gathering crabs begin to measure each other up and then they do something really rather extraordinary they arrange themselves into an orderly queue the biggest of the front smallest at the back they're lining up with one aim to exchange properties but none of the crabs can make a move because the chain is not yet complete they're all waiting for the right-sized crab to come along and this is it the latest arrival pushes to the head of the queue at first the chain falls apart as it reforms the small crab finally makes its move and takes its place at the end of the line after a close inspection the big crab moves in this triggers a chain reaction each crab hurriedly moves into the shell vacated by the crab ahead of it in the line just as the small crab attempts to move into its new home the fresh arrival muscles in to be left without a shell is a death sentence a naked crab will quickly cook under the intense tropical Sun but after all the swapping there is still one shell left sadly it's no bigger than this small crabs original shell and worse it's got a hole in it but even a bad shell is better than being homeless

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33 thoughts on “Amazing Crabs Shell Exchange | Life Story | BBC Earth

  1. confusing.. say there are 10 crabs and an empty shell.. so crab -> shell is 10:11.. there is a new arrival now it is 11:12.. if each crab takes one there should be 2 shells left for the last crab.. his original shell and may be the new arrival's shell๐Ÿค”

  2. Reminds me of the superiority classrooms have when teachers tell the students to lineup at the door alphabeticle style.

  3. If any bird finds them…. they all will be family dinner maybe feast๐Ÿ˜’ … ofcouse sequencely… haha

  4. Crab -ummmm oh it's time to change my outfit and little bit makeover ๐Ÿ˜€๐Ÿ˜ƒ๐Ÿ˜€๐Ÿ˜ƒ๐Ÿ˜ crabs goes for shopping
    and like this is mine ,no this is mine ,just stay away of it ๐Ÿ˜‚๐Ÿ˜…๐Ÿ˜†

  5. Heres the link to crab rave:
    https://youtu.be/LDU_Txk06tM

    Because thats where everyone is going after this

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