Grassy Key Island

Grassy Key at a Glance

Grassy Key is a small, low-key island just north of Marathon, best known as the home of the Dolphin Research Center. Mostly residential, with quiet beaches and easy access to the Middle Keys.

Grassy Key at a Glance#

Local Time

8:27 PM

GMT-4

Weather

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Population

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Known for: dolphins and a slow pace.

Don’t miss: the Dolphin Research Center (swim-with programs), the beaches and kayaking of nearby Curry Hammock State Park, and quiet shorelines.

When to go: year-round.

The Dolphin Research Center on Grassy Key grew out of the 1963 film ‘Flipper’, and is home to a family of dolphins that have lived there for generations.