
Alligators in Florida's Everglades dig depressions through muck and peat, often down to the limestone bed, during the dry season, and the water-filled holes they maintain concentrate fish, turtles and wading birds so densely that ecologists count them as critical dry-season refuges across the southern marsh
During the Everglades' dry season, American alligators excavate and maintain water-filled depressions in the limestone that concentrate fish, turtles and wading birds — a piece of animal-built infrastructure that ecologists increasingly treat as central to how the southern marsh works.















