Which item is essential for lifeguards to wear while conducting underwater searches?

Wearing a mask and fins is crucial for lifeguards conducting underwater searches for several reasons. The mask allows the lifeguard to see clearly underwater, significantly enhancing visibility and enabling them to locate submerged individuals or objects effectively. Clear sight is essential in an emergency situation to assess the situation and respond appropriately.

Fins, on the other hand, provide the lifeguard with added propulsion and speed. This allows them to move quickly and efficiently through the water, which can be vital when searching for someone who may need immediate assistance. The combination of the mask and fins equips lifeguards with the necessary tools to perform their duties effectively and safely while searching underwater.

In contrast, sunblock is useful for outdoor aquatic activities but does not aid in underwater searches. Flotation devices are generally important for safety and support but are not specifically tailored for the visibility and mobility needed in an underwater context. Swim goggles can aid in vision but may not provide the same level of support and coverage as a mask.