Some Enviromental issue.
Look at this. Psyttaleia, small island 0.4 km2 in front of Piraeus. The island houses the largest sewage treatment plant in Europe. Pitty there is none at Adriatic and rest of the Med.

Pogledajte ovo. Psyttaleia, mali otok od 0.4 km2 pored Pireja. Na otoku je smjestena najvece postrojenje za preradu otpadnih voda u Europi. Steta sto nema nijedne na Jadranu i u Mediteranu.