Slow Down: Whale Crossing

North Atlantic right whale with calf (Eubalaena glacialis). Right whales are large baleen whales. Adults are generally between 45 and 55 feet (13.7-16.7 m) long. Females give birth to their first calf at an average age of 9-10 years. Gestation lasts approximately 1 year. Most winter off the southeastern United States and head North for summer feeding and nursery grounds off New England and farther North.
(Image credit: NOAA)

The thirteen buoys of the Right Whale Listening Network listen for endangered right whales crossing shipping channels, and provide a warning to ships to slow down. The smart buoys were developed at the Cornell Lab of Ornithology and Woods Hole Oceanographic Institution

The busy shipping lanes in Massachusetts Bay (and elsewhere along the east coast) have been the site of deadly collisions between the gentle whales and merchant ships. The Right Whale Listening Network uses auto-detection smart buoys with a listening radius of five miles to recognize the right whale's call; the buoys record the sound and upload it to the network's website and to the Northeast U.S. Right Whale Sighting Advisory System, operated by the National Oceanic and Atmospheric Administration (NOAA).

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Bill Christensen catalogues the inventions, technology and ideas of science fiction writers at his website, Technovelgy. He is a contributor to Live Science.