According to Sheck Exley, what should a diver prioritize to ensure safety in overhead environments?

Prioritizing proper training is essential for diver safety in overhead environments, as emphasized by Sheck Exley. Training provides divers with the necessary skills, knowledge, and techniques to navigate the complexities and potential hazards associated with cavern and cave diving. This level of preparation builds a foundation for making sound decisions underwater, managing emergencies, and employing proper diving practices.

A well-trained diver understands not only the specific requirements for overhead environments but also the critical importance of safety protocols, dive planning, and equipment management. Proper training instills confidence and competence, allowing divers to react effectively to unforeseen situations, therefore significantly enhancing their safety while exploring these challenging environments.