Hundreds of thousands of dead fish washed up in Keansburg and Hazlet.
Workers cleaned up many of the tiny peanut bunker trapped at Lentze Marina using vacuum trucks provided by the Hazlet Department of Public Works.
State environmental officials are trying to determine what is causing a large amount of dead fish to wash up in the Navesink River.
The dead fish started appearing late last week, particularly in the waters off Marine Park in Red Bank, a popular spot for pedestrians as well as boaters.
The number of dead fish began multiplying this week, to the point that they were visible from almost every spot along the bulkhead at the park.
They also surrounded several boats.
While doing routine algae sampling of the river at the park, staff from the Monmouth County Health Department noted stressed and dying mehanden, said Larry Hajna, a spokesman for the state Department of Environmental Protection.
Mass animal die off's