Glass-Bottom Boat Cruises in Key Largo

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.