In the papers here yesterday was an article about technological measures being taken to protect our beach goers from the increasing attacks by Great White sharks. As Great Whites move around our coastline constantly over vast distances a program is underway to tag as many sharks as possible. Over a hundred Great Whites have now been tagged. This involves using a prod device to inert a microchip into the shark's dorsal fin. The second part of the program has seen over one hundred listening receivers installed on the sea bed off Perth's beaches. A monitoring station is able to pick up a signal from an approaching shark and raise the alarm in just one minute after the signal has traveled to a base station to Canada and back via satellite. Great Whites are a protected species but the sharks don't share the same sentiment about people.