Piperi island and its greater marine area are basically the centre of the Marine Park of Alonissos. This 7 sq. km island is especially hard to approach as there is not even one protected bay for the boats to dock.
Piperi island is the centre of the protection of the monachus-monachus seal. For this reason, it is prohibited to approach the island at a distance smaller than 3 nautical miles. This is because they need to have the area filled with fish and to protect the seal from the human presence.
