What danger do swirling currents pose in water rescues?

Swirling currents pose a significant danger during water rescues because they can pull individuals underwater and create instability. This type of current, often referred to as a vortex or eddy, can cause swimmers or rescue personnel to lose their footing or become disoriented. The unpredictable nature of swirling water can lead to rapid submersion, making it difficult for both the victim and the rescuer to maintain control and stability. This can heighten the risk of drowning, as individuals may struggle to escape or orient themselves within the turbulent water.

The other options address important aspects of water rescue but do not capture the primary danger posed by swirling currents. While confusion among rescuers and decreased visibility can be problematic, they are not the immediate and most critical threats in this scenario. Additionally, swirling currents might actually complicate a rescue rather than speeding it up, as rescuers must navigate through potentially hazardous conditions that require careful strategy and timing.