“…The instructor briefs and prepares the visitor, closely monitors and guides him/her, and, in essence, leads the visitor on an underwater tour during the dive. In Israel, such introductory dives typically last between 30 and 40 min, and they are restricted in depth, not exceeding 6 m [33]. Although the guests or tourists are controlled by the instructor, and they receive briefings on how to avoid harming the underwater wildlife, these divers sometimes exhibit unsteady behaviors.…”