A glass bottom boat tour in Nassau lets you cruise the harbor and nearby reefs without getting wet. You'll see colorful fish, small sharks, rays, and coral heads through the viewing panels while the captain gives a running commentary. Most trips last 1.5 to 3 hours and combine harbor sightseeing with a stop over a shallow reef. The ride itself can be surprisingly smooth or choppy depending on the weather and boat size. It's a solid choice if you have limited time, mobility issues, or just don't want to snorkel.
Expect to pay around $50–$90 per adult for a standard 90-minute harbor tour. Longer eco-tours that include a beach stop or light refreshments run $150–$220. December to April brings the best weather—calmer seas and better visibility—though it's also peak season and more crowded. Summer and fall are cheaper but riskier due to rain and occasional rough water that can make the glass panels less effective.
Pick a smaller semi-submersible style boat if you want clearer views and fewer passengers. Skip the ones that advertise an open bar; the alcohol is usually cheap and the real value is in the marine life, not the drinks. Bring polarized sunglasses and a hat even if it's overcast—the glare off the water can still be brutal.
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