Blog Post Image: Scientists Use Marine Robots to Detect Endangered Whales

Chief scientist Mark Baumgartner secures a glider (with its wings removed) after it was recovered Dec. 4 from its three-week mission. The gliders are equipped with an underwater microphone and an iridium satellite antenna. The vehicle surfaces every few hours to get a GPS position and transmit data to shore-side computers. (Photo by Nadine Lysiak, Woods Hole Oceanographic Institution)