Vandals carved names in the turtles. 600 people fought back.

Hawaii's green sea turtles, called honu, started showing up with names and initials scratched into their shells, and roughly 600 people decided to do something about it. The markings looked like graffiti, etched into animals that can live for decades. Rather than wait for an agency to act, ordinary residents organized into a network of citizen scientists, documenting the defaced turtles and tracking where they hauled out to rest. Their records helped build the case for new protections for the species. Sea turtles do not move quickly and do not flee a stranger with a pocketknife, which is part of why the vandalism was possible in the first place. The same slowness made them easy for volunteers to find and photograph again and again. The honu kept returning to the same beaches. So did the people watching over them.