Urbina Bay is located on the southeast side of Alcedo volcano on Isabela Island. This area was thrust upward from beneath the sea by volcanic activity in 1954, and much coral, rounded stones, and other skeletons and marine formations can be seen on this site.
Endemic plant species, such the thin-leaved Darwin´s shrub, have begun to colonize the freshly available land, and Marine Iguanas have also taken advantage of it, as some of the largest specimens of the islands have been found here. On this site is also possible to find the endemic Manzanillo or poison-apple tree. The sap can burn the skin, though giant tortoises appear to be unaffected, and eat the fruit. There are two trails on this site, one long and one short, but the uplifted coral heads can only be seen on the longer trail. The local fauna includes flightless cormorants, penguins, blue-footed boobies and pelicans.