Don't know if this is necessarily End Times material, but from what the articles say, this seaweed is stinkin' up the coastline, drawing flies, and discouraging beachgoers. Apparently it looks like piles of hair and is getting into the lobster traps of fishermen (second link). Residents are trying to clean it up.
Kinda puts me in mind of several of the Ten Plagues all rolled into one . . .