Some embodiments of fishing bobbers include a main body portion, a first shaft portion, a second shaft portion, a slot, a first closing mechanism, and a second closing mechanism. Each of the first and second shaft portions has a generally cylindrical shape. The first shaft portion is positioned at one of the outer ends of the main body portion, and the second shaft portion is positioned at an opposite one of the outer ends of the main body portion. The slot runs along a length of the fishing bobber and enables a fishing line to be positioned within a central aperture of the fishing bobber. The first closing mechanism is positioned within the first shaft portion, and the second closing mechanism is positioned within the second shaft portion. The first and second closing mechanisms can be rotated between open and closed positions.