Isabel Island is one of the main seabird nesting areas in the Pacific Ocean. It is situated in a very productive area with enormous marine riches, and this enables it to maintain a large population of birds that find the conditions necessary for successful breeding. A total of 92 bird species has been recorded on Isla Isabel. It is a nesting site for 9 seabird species that congregate in large colonies, of which 4 are resident and 5 are migratory.

Birds in the isabel island are: Bobo white breast, brown bobby, frigatebird, heermann´s qull, sooty tern, brown noddy, sula sula, pelecanus occidentalis, larus heermanni, anous stolidus, fregata, sula leucogaster, sooty tern.

The island was originated by strombolian volcanism, which is one of the most explosive types of volcanism.

The island was formed by the superposition of layers constituted by large, medium, and small basalt fragments and volcanic ashes, which is the disintegrated part of the basalt that is accumulated around the cone (cineritic formations). The arrangement of volcanic matter on the island suggests that there.

Were different volcanic activities present there. The initial phases of volcanism were caused by basaltic lava flows that formed the base of the structure; these flows

The distribution of soil types is determined by the material forming it (volcanic rocks or matter derived from them), the relief and origins (effects of transportation by rainwater or formed directly on mother rock). In general, the entire island has interstratified lavic and pyroclastic volcanic rocks and soils derived from these (Ruiz, 1977). Lava, which covers a large part of the island, is predominantly scoriaceous with a rough surface and broken gray borders. Soil formation is closely associated with rainfall patterns, since a great amount of matter is transported towards the internal central depressions and the Lago Cráter [ Crater Lake]. In these depressions, soils contain a large amount of clay; on the outside they are mostly sandy due to the fact that the majority of fine materials, as well as guano, are transported by rainwater towards the ocean. These materials that were in contact with water come to be hydrated, forming a soil with highly cemented particles, with practically no drainage and barely developed. On the central (or northern) plain, edaphic features are varied; to the north, they are clayey crumbs, while in the south they are clayey/sandy crumbs (Macías, 1979).

The soils of the exterior slopes have a clayey texture and are important for maintaining vegetation in the tropical deciduous forest.