onk seals - these are considered to be the rarest seals in the world only findable in few areas of the Mediterranean and Mauritania seas - only 500 hundred specimens worldwide. 25 five of them you will find in “Desertas” Islands. Fortunately, contrarily to what is happening in other areas of the globe, this group is the only one growing and it is the only colony showing signs of recovery. They are known has monk seals of the Mediterranean, due to their preference for caves to rest and for the texture of their skin.