The fish must have adapted! Everything else is true to your description, and usually I'm a pretty corals kind of girl, but from the second we dropped down my breath was taken away. I have been extremely impressed with Phuket's marine biomass so far, esp the massive bait balls, but this one takes the cake even without any corals. Imagine being in a cloud of baby barracuda frantically hunting, and you're their bait.Interesting, I was at that wreck on December 21st and it was totally boring. 3-5m visibility, no corals, no fish to speak of, and the wreck was completely stripped of anything before it was sunk, only thing left is a bare hull.