Okay kiddo, have you ever seen a big machine that helps to clean up a lake or a river by cutting and collecting plants that grow in the water? That machine is called an aquatic weed harvester!
The harvester is like a big floating lawnmower that goes back and forth over the water to cut and collect the weeds. The weeds can grow really tall in the water and might make it hard for boats to move or for fish to swim.
The harvester has a long arm with a blade on the end that cuts the weeds down to a small size. The cut weeds then go through a conveyor belt and are collected in a big bin on the harvester.
Once the bin is full of cut weeds, the harvester goes back to shore to dump them out. This helps to keep the water clean and make it easier for everyone to enjoy swimming, boating, or fishing in the water.
So, in short, an aquatic weed harvester is a big machine that helps to keep lakes and rivers clean by cutting and collecting the plants that grow in the water.