The Tunnels are one of the best snorkeling tour on the Galapagos islands! The volcanic sceneries are unique, you can see lava tunnels going into the ocean. You can spot almost everytime white tipped sharks, sea turtles, various tropical fishes, and often penguins and blue footed boobies. The navigation to the site lasts approx 1h. The snorkeling is quite easy (no deep, calm area). The boats are basic speedboats equipped with toilets, towels, shadowed area. You have water and snacks included. The tour is great for families, we do require that people that book it know how to swim. From June to November a wetsuit is included.