Fishing bobbers are a fishing tool that has been used by anglers since ancient times. They are usually made of rubber or plastic and they are inflated with air to create buoyancy. This helps the fish to see the bobber more easily, which attracts the attention of fish in the area. Fishing Bobbers have been around for centuries and have been improved over time. The earliest bobbers were made from wood and were too heavy to be lifted out of the water when weight was added on them, but modern fishing bobbers can actually be adjusted to sink at different depths so that fishers can find baitfish living at different levels in the water column.