When they're not breaking world records, fuel-hating Wave Glider seabots like to indulge in other hobbies, like shark tracking. One of the vessels has just been launched off the coast near San Francisco (vid after the break), adding a mobile worker to the existing local network of buoy-mounted receivers. They monitor the movements of electronically tagged sea life, including the fearsome Great White, picking up signals within a 1,000-foot range while researchers from Stanford University analyze the data from the safety of the shore. Better still, the free Shark Net iOS app gives anyone the chance to track these things, and activity should increase as the monitoring network (hopefully) expands along the west coast and more bots are introduced. You didn't think the world's fascination sharks was limited to only a single single week, did you?