Harry the Crab is a crustacean who lives at the Atlantis Discovery Area of Legoland in Windsor, United Kingdom. This is a theme park wholly dedicated to everything LEGO. The particular neighborhood that Harry lives is nautically themed -- an appropriate place for a hermit crab, no doubt. However, like the park in which it resides, almost everything in the aquarium is made from LEGO; this includes Harry's shell.
The crafty little crab doesn't seem to mind though. In fact, the colorful plastic blocks are probably a step up from a pop can or old boot, as far as crustacean abodes go. Beyond aesthetics, Harry's LEGO shell offers him a surprising degree of mobility judging by the video featured here. He walks about without any noticeable amount of effort, proving that one need not always sacrifice form for function.