What is a critical aspect of dive planning?

Establishing a communication plan with surface support is vital in dive planning because it ensures the safety and effectiveness of the dive operation. Effective communication allows divers and surface personnel to coordinate activities, share critical information, observe safety protocols, and respond promptly to emergencies. This communication can take various forms, such as hand signals, radios, or signals like buoys.

While selecting multiple dive sites, conducting environmental assessments, and collecting underwater samples are important aspects of diving, they do not inherently address the immediate communication needs that arise during a dive. A solid communication plan directly contributes to the overall safety of the dive operation, making it a cornerstone of effective dive planning.