Post Office Bay/Floreana Island was the first inhabited island and has an exciting human history. It includes the mysterious deaths of several inhabitants that have never been solved. There are fresh water wells as this area was used by the early settlers who found refuge in the caves nearby. It is also home to the endemic medium tree finch that only exists on this island.
Pink flamingos and green sea turtles nest on this island (December to May). The Galapagos storm petrel is also found here, a sea bird that spends most of its life away from land. At Post Office Bay, since the 18th century whalers kept a wooden barrel that served as post office so that mail could be picked up and delivered to their destination. Tourists can leave their post cards in the barrel and take any addressed to someone in their home towns back home to pass on.