Swim at your own risk as Minnesota lakes turn green

Beware, swimmers. Something may be lurking in the water, waiting to strike.

Cue the “Jaws” music.

Unlike the predator from the granddaddy of all shark dramas, this menace to swimmers has no fins. In fact, it can’t even be seen. Worse, it takes many forms — parasite, bacteria or virus — and can make you really sick.

http://www.startribune.com/swim-at-your-own-risk-as-minnesota-lakes-turn-green/322847591/