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In a Sept. 28, 2009 photo, a 120-foot long fiberglass antenna enclosure that houses six different antennas is installed at the bottom of the South Fork of the Salmon River in the Payette National Forest, Idaho. The antennas receive a signal from a tiny transmitter implanted in Steelhead and Chinook Salmon and the data is logged and transmitted. The antenna, which costs $125,000, is manufactured by Boise-based Biomark Inc. and will help researches study fish at the end of their life cycle. (AP Photo/Joe Jaszewski) Sat Nov 7, 1:23 PM ET

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