The waters around Key Largo are renowned for their spectacular marine life, from rainbow-colored coral reefs to vast schools of fish. But you don’t need a snorkel or scuba tank to enjoy a glimpse of the aquatic world. Key Largo glass bottom boat tours let you admire the underwater wonders from the comfort of a motorized yacht—you don’t even have to get wet. You’ll cruise through state park and marine reserve waters, passing over living coral reefs where you might spot colorful sea fans, sea plumes, and a wide variety of tropical fish.