Marathon - right off of Overseas Highway near Key Colony. New open air aquarium experience.
https://floridakeysaquariumencounters.com/Marathon - Historic trail leading out to the open water. Fish pedicure pond also!
https://cranepoint.net/Grassy Key - not too far north of our house. Learn all about the dolphins and see them as well!
https://dolphins.org/Marathon - Original 7 mile bridge next to the current one. Completely restored, great for walking and biking over the ocean. It's 2 miles one way and leads to another great site called Pigeon Key.
https://pigeonkey.net/old-7-mile-bridge-open-to-public/Marathon - Historic island at the end of the old 7 mile bridge. Take the ferry tour or walk the bridge to get to it.
https://pigeonkey.netIslamorada - We've never been but many people love it
https://theaterofthesea.com/Marathon - Almost right across the street from our house!
https://www.turtlehospital.org/