Emperor penguins huddle together to keep warm over winter. They've developed their own system for making sure each penguin gets a chance to stand in the middle of the huddle and then rotate to the outside and give another a spot. The result resembles a crowd doing the wave! -via Buzzfeed
BIG NEATOSHOP SALE: GET UP TO 20% OFF T-SHIRTS (ENDS 3/8/15)
Save big on Funny T-shirts, Science T-shirts, Sci-fi T-shirts, and more!