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So what's the problem? He flipped over a piece of trash to see what what's under it?
However there was a DM from another resort that brought his divers over while I was filming a Rhinopias, crowded me out and then proceeded to move the Rhinopias away from its sheltered site out into the open on the sand in shallower water. Grrr.
Okay but is it muck, sand or coral? It appears to be muck. I don't see any coral. I understand not dropping it on any fish life, although most little things are usually able to crawl and creep out from under stuff but I don't get the idea that he killed coral. Because its not a coral reef?... But he didn't put it back it in the right place. He dropped it onto a new area where we could assume he didn't check to see if that area was clear of fish life. Just because you can't immediately see any fish life doesn't mean there isn't anything hiding in the sand.
Also there was the big plume of sand that was sent up when he dropped the object back down again. When this sand settles onto coral it doesn't allow it to breathe and then this stops the sun from reaching the coral and if a large enough amount of sand does this the coral could die.
In that video there wasn't a huge amount of sand but if everyone does that we're going to run out of dive sites pretty quickly.
If anyone is in doubt don't touch ANYTHING.