Azores inhabitants. The nine islands that compose the archipelago occupy a surface area of , that includes both the main islands and many islets located in their vicinities. Each of the islands has its own distinct geomorphological characteristics that make them unique: Corvo (the smallest island) is a crater of a major Plinian eruption; Flores (its neighbor on the North American Plate) is a rugged island carved by many valleys and escarpments; Faial characterized for its shield volcano and caldera (Cabeço Gordo); Pico, is the highest point, at , in the Azores and continental Portugal; Graciosa is known for its active
Hydrothermal vents and seamounts of the Azores waters of the Azores: These sites, with the exception of the Moytirra system, are located in the southern part of the archipelago, and have been investigated by national and international scientists. The isolated Dom João de Castro Bank is also considered in this group; located between São Miguel and Terceira, the seamount is one of the highest independent seamounts in the archipelago and home to a thriving marine volcanic habitat. In 2010, a shallow hydrothermal field was discovered off the Ponta da Espalamaca, on the island of Faial, showing evidence of de-gasification. Efforts are being made to classify these areas