stoolpigeon writes "Scientists on Florida's Gulf Coast are trying to find an underwater robot that has mysteriously vanished. The robot from the Mote Marine Laboratory in Sarasota has been missing since Monday. The robot, which cost about $100,000, was equipped with a detector to find red tide, a toxic algae bloom. The detector was valued at another $30,000. Scientists aren't sure what happened to the robot, which is nicknamed Waldo."