The concept of honesty in diving and how each diver deals with the environment he visits.
Maritime honesty is a moral principle before it is a law. An honest diver does not need to be reminded of the rules.
You leave each dive site in better condition, or at least the same as you arrived.
What you see underwater is not for everyone but for the environment you belong to. Do not move it, destroy it, or take it.
Report pollution sites. Share security information. Stand with those who need help.
The faithful diver's fingerprint in the sea is the fingerprint that is not seen.