The world port at highest risk of invasive species is Singapore, according to a new study.
The Suez Canal and Hong Kong follow Singapore, according to the study, which reveals the 20 ports most likely to be attacked by invasive species.
Global shipping has carried exotic animals and plants such as lionfish, zebra mussels and killer algae around the world on ship's hulls or in their ballast water, which ships add and dump for balance. Full story
