Most of the Galápagos Islands are just the tips of larger, submerged volcanos; some, however, are the product of mechanical events where former submarine platform was uplifted a long time ago. North Seymour is an example of this being flat and dry, but it is located amidst highly productive waters. Various seabird colonies have made it their home, amongst them great and magnificent frigatebirds, native species of the Galápagos Archipelago. Each island we visit during our expedition is very different to the previous one, and Rábida has high elevations and a green vegetation cover. The most striking feature of this island is that its rocks and sands have high concentrations of iron oxide, giving it a reddish appearance.