The trucks are lined up on the beach, rear doors open towards the ocean. On the sand there are piles of empty crates, and every now and then a worker takes one and goes to meet the small coloured pirogues that reach the beach loaded with fish.
Fish farmers insist the impact is minimal, Greek scientists now claim the pollution they produce is killing crucial marine ecosystems.
As farming of sea bass and sea bream has grown in Greece and Italy, so have environmental concerns.
Fish farmers in Scotland are permitted to use 16 "toxic" chemicals to kill parasites and fungi, control infections and anaesthetise fish.