An inviting inlet on the island's coastline is not only the resting place for the Flightless Cormorant, but is also regularly frequented by sea turtles. Red and turquoise-blue zayapas (Sally lightfoot) crabs can often be spotted dispersing across the lava shoreline, while sea lions enjoy basking in the sun.

The Galapagos islands are renowned for their colonies of land iguanas, which over the years have slowly adapted to their habitats, sustaining themselves on cactus and other land plants. Today, there are two species of these land iguanas in the archipelago, with a third species that managed to survive on a diet of seaweed, thus becoming the only marine iguana in the world.

Fernandina is home to the largest colony of marine iguanas. Punta Espinosa is one of the few places where one can glimpse them grazing on seaweed both above and below water. The usual feeding pattern for the marine iguana is to dive to about 3 metres below water and remain there for 5 to 10 minutes. However, larger males have been recorded to descend to as deep as 12 metres, where they have stayed for up to an hour.

A tourist trail at Punta Espinosa leads through black lava beds to a barren patch of land, rich in wildlife amid sporadic mangroves. During the first half of the year, iguanas make their nest here by burrowing small holes in the sand.