Biologists tag Cape Cod seals ← Related Article Visit The Boston Globe Share on Twitter Share on Facebook Comment on this Scroll to top of page Jessica Rinaldi For The Boston Globe Scientists do not know much about the region’s gray seal population — how large it is, for example, or where the seals spend most of their time. Jessica Rinaldi For The Boston Globe For the first time, the seals are being tagged and tracked, according to the researchers, who came from the US and Canada. Jessica Rinaldi For The Boston Globe The team used a scalpel to clean glue off the sensors before releasing the animal at Chatham Harbor. Jessica Rinaldi For The Boston Globe "We don't get access to animals like this very often, so you have to keep calm to perform the task," said Jerry Moxley, a doctoral student at Duke University. Jessica Rinaldi For The Boston Globe The researchers plan to tag nine seals and collect biological samples from up to 30 seals through Monday.