If you’re heading to the Keys and skipping John Pennekamp, you’re seriously missing out. This place is all about the water — snorkeling, kayaking, glass-bottom boat tours, and some of the most stunning underwater views in Florida. It’s basically an ocean lover’s playground.

The main draw here is the coral reef — this is the first undersea park in the U.S., and it’s home to bright coral, tropical fish, sea turtles, rays, and even a submerged Christ of the Abyss statue that snorkelers and divers love to visit. You can rent gear or book a snorkel tour directly through the park.

If you want to stay dry, you can still see everything on a glass-bottom boat tour, which gives you a front-row seat to the reef without getting wet — perfect for kids, grandparents, or anyone not up for the water.

Beyond the reef, the park has:

• A mangrove kayak trail (rentals or BYO gear)

• Small beaches for swimming, picnicking, or just taking a break

• A visitors center with aquariums and info on coral conservation

• Clean restrooms, showers, and a snack bar

Good to know before you go:

• Book tours ahead — snorkeling and glass-bottom boat spots fill fast, especially in winter and spring

• The park gets busy by mid-morning, so arrive early for easier parking and calmer water

• Reef-safe sunscreen only — it’s strictly enforced to protect the coral

• No lifeguards at the beach areas, so swim smart

• Budget time to explore — half a day here flies by

Whether you’re diving in or staying dry, John Pennekamp is a must-stop for anyone heading through Key Largo. It’s one of those rare places where you can truly see the Florida Keys underwater — and understand why they’re so worth protecting.