What is the definition of buoyancy in diving?

Buoyancy is fundamentally defined as the upward force exerted by a fluid, such as water, that opposes the weight of an object submerged in that fluid. This force arises from the pressure differential exerted by the fluid on different parts of the object, allowing it to float or rise within the fluid rather than sinking. In the context of diving, understanding buoyancy is crucial for maintaining proper position and control underwater. A diver must be able to manage buoyancy to ensure comfort and safety, allowing for the ability to ascend, descend, or hover at a certain depth effectively. This is why the description accurately captures the essence of buoyancy in a diving context.