Things to do In Grassy Key, FL
Explore thousands of activities, tourist attractions and tours with free cancellation and no added fees.
Explore and shop airport transfers, excursions, day tours & more.
Earn hotel savings and exclusive travel perks with Orbitz RewardsOpens in a new window.
Things to do
Mangroves and Manatees - Guided Kayak Eco Tour
$69
per adult
92% of travellers recommend
Day Sailing Adventure in the Florida Marine Sanctuary
$120
per adult
100% of travellers recommend
Marathon Key FL: Snorkel Trips and Sunset Cruises
$69
per adult
Florida Keys Nature & History Tour from Key West
$119
per adult
88% of travellers recommend
Popular activities in Grassy Key
Tours & day trips
See all 25 activities
Mangroves and Manatees - Guided Kayak Eco Tour
Activity duration is 2 hours
9.6 out of 10 with 562 reviews
Free cancellation available
Water activities
See all 9 activitiesMangroves and Manatees - Guided Kayak Eco Tour
Activity duration is 2 hours
9.6 out of 10 with 562 reviews
Free cancellation available
Private & custom tours
See all 7 activities
Marathon: Private Cable or Cable Kiteboarding Session
Activity duration is 1 hour
Free cancellation available
Wildlife & nature
See all 5 activities
Marathon, Florida Keys: Sunset Cruise with Local Seafood
Activity duration is 2 hours
9.6 out of 10 with 8 reviews
Free cancellation available
