"When they were all together, Sharp was about eight feet from Monday and the group was about five feet off the crater’s wall.
They looked at each other and Monday motioned with her hands to ask Sharp if he was OK. He signaled back that he was.
In recreational diving, the buddy system is used to avoid or survive underwater emergencies. But before Monday and Sharp could “buddy up,” the instructor started banging two metal sticks together to get everyone’s attention, pointing to a group of sharks about 20 feet away."
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Don't mean to continue piling on, but this (poorly written) account does seem to feature some blame-casting. Apparently, the claim is that before the divers could properly buddy up, the DM distracted them with a shark viewing.....
I already discussed the buddies choice to not actually fully buddy up by descending separately...
But, even after the descent, the divers looked at each other, about 8 feet away, and signaled each other OK... Doesn't this describe that they were then effectively buddied up? I mean, what more is needed before we can declare them buddied up?
In any case pointing out wildlife is not really a bad practice for a dive op, IMO, as it is done by basically all of them.
Again, the article is so poorly written that who knows about anything. Including from whom the blame-casting is coming from.
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Moreover, narcosis is mentioned as a cause, but it does seem pretty shallow for that. Really, with so little information, you cant really be sure about the cause. Could a medical event be the cause?