When most of us think of whales, we think of Shamu, blow holes, and that CD of soft soothing sounds you got in your stocking at Christmas that helps you fall asleep at night.
What we don't usually think of is speed; no, that's more dolphin than whale. Speedo, however, disagrees. And to prove it, they've taken the humpback whale as inspiration for a new line of flippers. They're called Nemesis Fins (presumably because "Whale Tootsies" didn't test well with the focus groups), and they incorporate some nifty bio-mimicry features that are actually kind of brilliant.