An adjustable fishing float having a novel securing mechanism for attaching the float to a fishing line. In a preferred embodiment, the fishing float includes a housing formed into a spherical shape. A vertical slot is disposed on a side of the housing, extending inwardly to a central, vertical axis of the sphere. A securing mechanism may be disposed within the housing, and provides a spring biased clamp that is in operative communication with the slot, so that a fishing line may be positioned within the slot and the float may be clamped to the fishing line in a desired position. A button on the side of the housing may be used to open the clamp, in order to affix the float to the line, remove the float from the line, or to adjust the float and move it upwardly or downwardly along the fishing line.