Koutseri (Diamanti)

Koutseri, also known as Diamanti, is an intermediate dive site off Skiathos reaching 20 meters around a picturesque rocky islet. The submerged base of the islet creates dramatic underwater cliffs and swimthroughs bathed in shifting light patterns. Dense posidonia beds surround the site, harboring pipefish, seahorses, and juvenile fish. The walls host colonies of orange cup corals and colorful sponges, while damselfish and wrasse animate the shallower sections in a site that rewards patient exploration.