There is a high level of endemism-species unique to the island.

The Pyrenean region exhibits high levels of endemism suggesting a major contribution to the phylogeography of European species.

The genetic types within G. ruber and Globigerinoides elongatus show a combination of endemism and coexistence, with little evidence for ecological differentiation.

The four Arabian endemisms represent the 13.33 % of the whole fauna.