A snorkeling excursion on the White River in Rochester, Vt., reveals an underwater world of deep, boulder studded pools teeming with aquatic life. With the use of implanted acoustic tags, the Vermont Fish & Wildlife Department works to protect Lake Champlain's endangered lake sturgeon. The Prue and Sicard families of Westmore, Vt., share an autumn hike up Haystack Mountain. We hit the trail on a geocaching adventure to find some hidden gems.