“That’s not possible… It’s clean, clean enough to bathe in… Fresh, the water is very fresh and pure. How? But we exchanged our ballast in the middle of the sea.”
Hutchinson, G. E. (1961) The paradox of the plankton. American Naturalist 95, 137-145.
USDA Forest Service. (2011) US Forest Service Takes Action to Confront the Threat of Invasive Species. Press release no 1150.