Tritech Deploys Shark Detection Sonar in Australia: The system was trialed extensively in Bondi Beach, Sydney Harbour, Hawk’s Nest Bay and Jeffrey’s Bay, South Africa before being deployed in Perth.” “It has been a fantastic experience to work with Shark Mitigation Systems on such a unique project ... Source: "Jeffreys Bay" - BingNews. … [Read more...] about J-Bay in the news: Tritech Deploys Shark Detection Sonar in Australia
sonar
Whales receive ONE day of peace and quiet
After halting the seismic survey in Algoa Bay on Thursday peace an quiet descended upon our marine neighbours for a day, only for permission to be given for the seimic survey to begin again lat on Friday afternoon. The call of the blue whale reaches levels up to 188 decibels. This extraordinarily loud whistle can be heard for hundreds of miles underwater. Theoretical calculations by Roger Payne and Douglas Webb (from the 1970's) predicted that the loudest whale sounds might be transmitted … [Read more...] about Whales receive ONE day of peace and quiet
