oil slick

US /ˈɔɪl slɪk/
UK /ˈɔɪl slɪk/
"oil slick" picture
1.

油膜, 油の流出

a layer of oil floating on water, especially one that has leaked from a ship or been discharged as waste

:
The environmental disaster was caused by a massive oil slick from the tanker.
その環境災害は、タンカーからの巨大な油膜によって引き起こされた。
Birds covered in an oil slick are a tragic sight.
油膜に覆われた鳥は悲劇的な光景だ。