'Swampwalker' Tracks Turtles

Winter has finally settled into new England, as snow covers most of the region and creatures hibernate for the season. For turtles, hibernation can last up to six months in the winter wetlands of New Hampshire, usually under the watchful eye of a man nicknamed "Swampwalker."

David Carroll is an author, artist, and naturalist who's lived a frugal life for decades, chronicling the murky world of turtles. Now, as a recipient of a MacArthur "Genius" grant, he can wade in the water without fear of going under. WBUR's David Boeri visits Carroll in his natural habitat.

The audio for this story will be available on WBUR's web site after 10 a.m. on Wednesday.