Roundup: Athens coastline, Saronic Gulf waters declared pollution free after 2017 oil spill

Tourists play volleyball at a beach near Saronic Gulf, Greece, on April 28, 2018. As temperatures have risen in recent days across Greece and Athenians and tourists try on their swimsuits, local authorities and experts assure them that they can take a dive without exceptions at all the beaches which were sealed off last year after the sinking of an oil tanker off Salamina island. (Xinhua/Marios Lolos)