We started our day with a Zodiac ride around Punta Vicente Roca. We also had an amazing snorkel excursion among turtles and sea lions. In the afternoon, we topped off a lovely day with an amazing walk on lava at Punta Espinoza on Fernandina Island, which happens to be an island so pristine that it doesn’t have feral mammals. What it does have is a lava field full of iguanas. This area started to erode, changing the entire topography of the island, making it perfect for these iguanas to find sedimentary areas to nest.