Bobbers are a type of fishing float used to help anglers detect when a fish bites. They are typically made of lightweight materials and come in various shapes and sizes. Bobbers are attached to the fishing line and float on the water's surface, signaling when a fish is tugging on the bait below. When a fish bites, the bobber will dip below the water or move erratically, alerting the angler to reel in their catch. Bobbers are commonly used in freshwater fishing, especially for species like bass, trout, and panfish. They are an essential tool for both novice and experienced fishermen.