What are two ways to signal for help when in the water?

Waving one arm and shouting loudly is an effective method of signaling for help when in the water. This technique creates a clear visual cue for lifeguards or other individuals nearby, increasing your visibility and making it easier for someone to spot you in distress. The act of waving a single arm is particularly important as it is a universally recognized signal for help. Coupling this action with loud vocalizations enhances your chances of being heard, especially in noisy environments like beaches where wave sounds can hinder auditory signals.

While other methods may have merit in specific contexts, such as blowing a whistle or using brightly colored equipment like buoys, the clear and demonstrative action of waving while shouting is often the most immediate and direct approach to attract attention in emergency situations.