Swim in crystal-clear, shallow waters at Passikudah bay, Hikkaduwa Marine Sanctuary, or Pigeon Island to see tropical fish, turtles, colourful corals, and rays up close. Guided tours provide masks, fins, snorkels, and wetsuits with full safety briefings, no prior experience needed. Gentle currents and protected reefs make it safe and fun for kids, beginners, and pros alike. Learn marine biology facts and follow no-touch rules to protect Sri Lanka’s underwater wonders.