Plenty of brilliant and not-so-brilliant minds have worked on the idea of preventing shark attacks. This list of patented products range from the sensible to the ridiculous. Most sensible is a chemical pack attached to life jackets to protect military personnel during World War II. The most ridiculous (at least in looks) is this suit covered with spikes. You could hurt yourself with that! See eight such inventions at mental_floss. Link
Tokyoflash Treasure Hunt - Win a Tokyoflash Watch of Your Choice!
Going on right now: Tokyoflash Treasure Hunt #26. Win a Tokyoflash watch and neat stuff from the NeatoShop. It's fun and easy to play: Link