Ocean City beachgoers urged to avoid mounds of washed-up grass that scientists call 'puzzling'

Mounds of an invasive straw-like grass found in marshes throughout the mid-Atlantic mysteriously washed up on Ocean City beaches this week, and town officials are urging beachgoers to avoid them. The sharp stalks of Phragmites grass could contain hazardous debris and sea life, town officials warned….
Source: Morningcall