Crabs Trade Shells in the Strangest Way | BBC Earth

As a hermit crab grows its shell becomes a tighter fit so eventually the crabs need to move into a bigger one, leading to an amazing exchange. Taken from Life Story. Subscribe to BBC Earth: Watch David Attenborough Dynasties series trailer here: --~-- WATCH MORE: New on Earth: Oceanscapes: Wild Thailand: Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you’ll find 50 years worth of astounding, entertaining, thought-provoking and educational natural history content. Dramatic, rare, and exclusive, nature doesn’t get more exciting than this. This is a commercial channel from BBC Studios. Service & Feedback