You’re looking at a satellite view of Florida’s Everglades, the largest subtropical wilderness in the US. It’s not a static wetland, but rather a ‘river of grass,’ a slow-moving river 60 miles wide and 100 miles long. Keep zooming in and you’ll likely see sawgrass marshes, mangrove trees, tropical birds, and a gator or two. Among the myriad interesting things about this unique and fragile ecosystem—it’s the only place in the world where American alligators and American crocodiles co-exist. How do you tell the difference between the two? Well, you see one later and the other after a while. (See what we did there?)