Hexagonal tiling on a water flea reminds us that Nature's great book is written in mathematics. pic.twitter.com/9rR542Dkl4">http://t.co/9rR542Dkl4">pic.twitter.com/9rR542Dkl4 (thanks @ziyatong)">@ziyatong)">@ziyatong)">https://twitter.com/ziyatong">@ziyatong)

— Cliff Pickover (@pickover) May">https://twitter.com/pickover/statuses/464599861976113152">May