At Prison Island you will be able to see Giant Aldabra Tortoise, which are rare species to found, they were gifted from Seychelles goverment. Adabra Giant Tortoise can live up to 300 years, the Oldest one at Prison Island is 197 years.
Also you will see Peacocks, Dik Dik (Antelopes), a Prison Ruins (Quarantine Station).