Bracing for rock snot

Icky Algae Worries New England Fishermen:

It looks like a clump of soiled sheep's wool, a cottony green or white mass that's turning up on rocks and river bottoms, snarling waterways.

Already a scourge in New Zealand and parts of the American South and West, the aquatic algae called "rock snot" is creeping into New England, where it is turning up in pristine rivers and alarming fishermen and wildlife biologists. ...

Via Mike the Mad Biologist.