From unexplained phenomena to baffling disappearances, follow the clues while discovering our country’s treasured protected areas.
“It felt like paddling through soggy cereal. My wife and I were deep within Everglades National Park, struggling to kayak past dense mats of periphyton, a mass of algae, fungi and other organisms. Making matters worse, numerous water trail markers were missing, seemingly swept away by recent hurricanes. After several confusing detours, the sun was getting low, and we were getting worried…”