A short, family-oriented snorkel aboard the Sundiver III explores the shallow coral reefs of the Florida Keys National Marine Sanctuary. Masks, fins and safety vests are included—bring or buy a snorkel and plan to check in one hour early.
More ways to explore the area's outdoor wonders
The boat eases away from a low, bright shoreline and the Atlantic opens like a page you can read. On the Sundiver III, families arrange themselves along the rail, fins in laps, float vests waiting, and the crew runs a quick safety briefing—clear, efficient, reassuring. The water ahead is shallow and restless with color; the coral gardens of the Florida Keys National Marine Sanctuary are not a hidden secret here but a living stage where parrotfish graze and small rays thread the sand.
Difficulty
easy
Duration
2–3 hours
Fitness Level
Suitable for most fitness levels; must be comfortable swimming and treading water for short periods.
Wildlife
History
John Pennekamp State Park was established in 1963 as the first undersea park in the United States, helping formalize reef protection in the Keys.
Conservation
The Florida Keys National Marine Sanctuary enforces no-touch rules and mooring buoys to protect coral; use reef-safe products and avoid disturbing marine life.
Reserve your spot on the Key Largo Snorkeling Tour - rental mask, fins and vest INCLUDED today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Check in early
You must check in at least one hour before departure at 102840 Overseas Highway—no exceptions and no refunds for missed boats.
Bring or buy a snorkel
Masks, fins and vests are included but snorkels are not—bring your own silicone snorkel for comfort or buy one at check-in.
Use reef-safe sunscreen
Apply mineral-based sunscreen before boarding and reapply carefully to avoid contaminating the reef; a thin long-sleeve top adds sun protection.
Know how to swim
All snorkelers must be able to swim; non-swimmers can remain on board and still enjoy the boat ride and scenery.
Personal snorkel
A silicone snorkel is more comfortable than rental options and avoids queueing at check-in.
Rashguard or wetsuit top
Protects against sun and light chafing while improving comfort during longer surface swims.
summer
Reef-safe sunscreen
Mineral sunscreen reduces damage to corals and protects your skin in intense tropical sun.
summer
Water shoes
Helpful on slippery docks and for moving around the boat safely.