We may think we know what is beautiful and what isn't, but in the natural world, beauty can be many things -- including what we might find completely repulsive. Not only can the bizarre be attractive, it can also provide just the edge a creature needs to succeed in a difficult environment. From frogfish and hagfish to naked mole rats and elephant seals, from vultures and warthogs to proboscis monkeys and the ugliest bug in Oklahoma, the program shows how and why ugly can be beautiful, even when it isn't pretty.