The Monachus Monachus Monk Seal in Zakynthos: Apart from the Caretta caretta sea turtle, another important species that frequents the waters of Zakynthos is the Mediterranean monk seal (Monachus monachus). These seals are thought to be among the rarest mammal species in Europe. They are light grey or brown in color and they do not live in herds, but individually. Although the largest marine park of the Mediterranean monk seal is located in the Sporades, particularly north of Alonissos, many seals can also be seen around the coastline of Zakynthos.
The seals go to the secluded caves of Zakynthos to give birth to their babies. The newly-born seals stay in the caves for two weeks before getting into the sea. Their diet consists of fish and other seafood. The main reasons for their extinction are the accidents caused by boats and the lack of food due to sea pollution.