See John Pennekamp Coral Reef through glass viewing windows on a narrated 2-hour cruise
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2 hours
Glass-bottom viewing, Narration
Hop aboard the M. V. Key Largo Princess for a 2-hour glass-bottom cruise to John Pennekamp Coral Reef State Park and the Key Largo National Marine Sanctuary. Watch the reef and sea life through large viewing windows as a narrator shares insights along the way.
Drinks and snacks are available for purchase on board. All ages welcome; every passenger, including infants and toddlers, must have a ticket. Activity may be canceled in severe weather.
Non-refundable and cannot be rescheduled. Activity may be canceled due to severe weather; if canceled by the operator, you may reschedule.
GPS Address: 99701 Overseas Hwy, Key Largo, FL 33037
This 2.5-hour reef tour delivers exactly what it promises: knowledgeable guides who genuinely care about sharing the underwater ecosystem with you. Reviewers consistently praise the crew's friendliness and expertise, with guides like Brandon calling out sea turtles, stingrays, and barracudas as they cruise over the coral reef. The boat offers both upper and lower viewing decks, plus a full bar with surprisingly strong drinks and decent specials. The booking process is smooth, and staff are accommodating when life happens. A few things to know before you go: the glass-bottom viewing area gets cramped when the boat's full, with kids understandably getting prime spots. Some passengers noted that certain window panes were clearer than others, though most still enjoyed the experience from the upper deck. The 45-minute ride each way can be rough on those prone to seasickness, so plan accordingly. Several reviewers mentioned it's worth bringing motion sickness medication if you're sensitive. Despite these considerations, most passengers had a fantastic time witnessing the only living coral reef in the continental U.S. from this unique vantage point.
Such a fun day! I learned so much. Great tour guides. Careful those drinks are strong!
Tonya Hansen
January 25, 2026
Such a fun day! I learned so much. Great tour guides. Careful those drinks are strong!
Tonya Hansen
January 25, 2026