Located at Uvas beach club, Clear Kayak (Carretera Sur, Km 8.5. 987/872-3539) runs what's called "dry-snorkeling" tours in see-through kayaks (imagine what the fish must be thinking). Paddling around with water seeming to flow past your toes is great fun, and there's time for real snorkeling as well. Tours, which cost $40 for adults and $27 for children, include entrance fee, 2 domestic drinks, and a 45-minute kayak trip; a more-expensive tour includes lunch.