Rocky islets within the protected marine world of the Sporades.
The Adelfoi islets lie near Alonnisos in important seabird and monk-seal waters, with no settlement or public visitor infrastructure.
Adelfoi forms part of the scattered island geography around Alonnisos and the National Marine Park of the Northern Sporades. Its cliffs and surrounding sea provide habitat for seabirds and marine life.
These are not sightseeing islands with a port or beach service. Their value lies in ecological protection, and boats should keep the distances and speeds set by park authorities.
Practical information
There is no ferry or permitted casual landing. View the islets only on authorised marine-park routes and follow all wildlife, anchoring and approach restrictions.
