This island is known as Bird Island, because of the large and varied bird colonies which nest here. There are an abundance of frigatebirds and it is among the best place in the archipelago to see red-footed boobies, Nazca boobies, swallow-tailed gulls, storm petrels, tropicbirds, Darwin's finches, and Galápagos mockingbirds.
Prince Philip's Steps is an extraordinary steep path that leads through a seabird colony full of life, up to cliffs that are 25 metres (82 feet) high. At the top, the trail continues inland, passing more seabird colonies in a thin palo santo forest. The trail also provides overviews of a rocky plain. Storm petrels here are different from any others in the world because they are active during the day. To avoid predators, they only return to their nest holes at night.
The smallest marine iguana in the archipelago lives here.
In Darwin Bay there is the possibility to either dive along the inner wall or go to the outer wall, which is less protected. Another possibility is to dive from the outside of the volcano through the channel into the caldera.