A floating marker can also be referred to as a buoy, float, beacon, or even lifesaver. These terms all describe an object that is placed in water to serve as a guide, warning, or reference point for boaters, swimmers, or other water activities. A buoy is typically a round or cylindrical shape that is attached to a chain, rope, or anchor to keep it in place. A float is similar but often smaller and used as a navigational aid. A beacon is a distinctive visible or audible signal used as a warning or marker. A lifesaver or lifebuoy is designed specifically for rescue purposes and can be thrown to a person in need of assistance.