Day 4 afternoon - Fernandina Fernandina is the westernmost island in the Galapagos Islands, the third largest and youngest of the islands, less than one million years old. It is the most volcanically active and sits at the centre of the hot spot that created the Galapagos Islands. Except for a single visitor site on the northeast edge of the island, the island is maintained in its pristine state. It has a large land iguana population, which nests both on the rim of the caldera and in its depths. Due to the cold, upwelling waters of the subsurface Cromwell Current that hits the archipelago from the west where it is pushed to the surface, the waters surrounding Fernandina and western Isabela are the richest waters in the archipelago. These cold waters also provide prime habitat for both Flightless Cormorants and Galapagos Penguins.