Watch How Hermit Crabs All Line Up to Exchange Their Shells

Hermit crabs use the scavenged shells of other animals as their homes. As the crabs grow, they periodically need to upgrade their housing to bigger shells. When a new shell appears on the beach, the cramped crabs will form a orderly queue nearby and then change shells all at once, with each crab moving into the next biggest shell just abandoned by its former occupant. This is possibly the most British thing I’ve ever seen an animal do…and the David Attenborough narration is the icing on top.

• David Attenborough
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