I have a lot of dive time logged. And I’m still learning. For instance, my equipment is old enough to need service. My BCD inflator is malfunctioning. Don’t worry if you don’t understand, it’s not important to the story. I have noticed it but did not fix it. It did not affect my dive. Until I figured out that it does. It slowly inflates my BCD. By the end of the dive the air in the tank is less and you float a little. The extra air in my BCD makes you float more. I did not put it together that this was occurring because of my malfunction. I automatically compensated. The upshot? Well, now I will have to fight less at the end of the dive. I fixed the problem. Buoyancy – always an issue – solved.
Open mouth? Well for a change I have several. Your mom told you not talk with your mouth open when you ate? It is not too common. I’ve been diving long enough to realize that certain behaviors are not commonly seen. I don’t see fish actually eating one another. I don’t see starfish eating the coral. I see stuff and probably don’t recognize its significance.