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Scientist Thorrold with shark tag

Tagging Sharks

To reveal the hidden lives of sharks, scientists like Simon Thorrold in the WHOI Fish Ecology Laboratory are using Pop-up Satellite Archival Transmitting tags. The tags attach to sharks, recording temperature, depth, and light levels every 3 to 5 seconds. After a programmed time, the tags release, float to the surface, and relay a summary of data logged by the tag via satellites. Thorrold will speak at a forum on sharks and seals tonight at 7 p.m., which will be Webcast. The public is also invited to explore educational displays and hands-on activities and talk to researchers 5:30 to 9 p.m., under the Discovery Tent behind Redfield Auditorium. (Photo by Tom Kleindinst, Woods Hole Oceanographic Institution)

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