Requires posting of signs warning of presence of, and potential danger caused by, duckweed on water bodies in public parks.

This bill requires state parks, counties, and municipalities to annually inspect public park water bodies for duckweed (a small aquatic plant that appears as a solid surface but is dangerous to walk on) and post clear warning signs if detected. It mandates the Department of Environmental Protection to develop educational materials about duckweed identification and provide standardized warning signs to local governments. The law applies directly to all public parks managed by state agencies, counties, or municipalities across New Jersey. Key provisions include mandatory annual inspections, standardized signage, and centralized distribution of educational resources to prevent accidents.