What does the "Immediate Attention" light signal look like?

The "Immediate Attention" light signal is designed to attract attention quickly and effectively, facilitating prompt responses in potentially urgent situations. It typically manifests as a rapid back and forth motion with the light, which serves to capture the attention of divers or personnel nearby. This type of signaling is critical in cavern diving environments, where visibility can be limited and immediate communication is essential for safety. The rapid motion helps in clearly distinguishing it from other light signals that might be used for different purposes, ensuring that it is recognized as a priority alert.

In contrast, other signal types, such as a circular light pattern or a steady beam directed upwards, do not provide the urgency that the "Immediate Attention" denotes. A soft glow in a specific direction might indicate a less urgent situation or serve as guidance but lacks the clarity and urgency required to signal immediate attention.