00:01The very best shells are the ones where the previous tenant has just died.
00:08When a sea snail is being devoured by some predator,
00:11you'll often find a hermit crab watching and waiting for the next hot property.
00:20In fact, if a new shell is about to come on the market,
00:22loads of hermit crabs will gather together,
00:24even ones that are too small for the new shell,
00:27because they know that when the new shell becomes available
00:30and a new owner moves in, their previous house is empty.
00:34And they can all move up the ladder,
00:36going from small to medium, medium to large, large to extra large,
00:40and find themselves a brand new property.
00:43After all, there's no place like home,
00:46especially if it keeps you safe from hungry predators.
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