Quick -- the tide is coming in!
Little Crab Quickly Builds A Sand Igloo As Tide Comes In

This is a short video from Vung Tau, Vietnam of a tiny sand bubbler crab quickly constructing a sand igloo before the tide comes in. The tiny crab will remain in its little temporary home with a bubble of air and continue to dig sand from beneath it and plaster it to the ceiling until the tide recedes again and it’s time to come out and party. And I, for one, plan on being there with a tiny bucket of Corona to split.