Arguably one of the most impressive marine sites on Isabela, the tunnels at Cabo Rosa are incredible geological formations created as ocean waves crashed into hot lava flows. The cooled lava formed arches, tunnels, pillars and collapsed tubes that rise out of and under the surface of shallow emerald and turquoise waters of the bay. On this full day tour, navigate in a small boat to the tuneles and have the unforgettable opportunity to snorkel in the clear, calm waters of this marine paradise. Swim with peaceful white tipped reef sharks, manta rays, parrot fish, yellowtailed surgeon fish, marine turtles and the ever-playful sea lions. Should you not want to snorkel, you can view the marine life from the boat and also walk on the surface of the lava formations. (full day, group activity, lunch included, snorkel equipment included)