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Looks like you never got to the canyon (it's about 300 yards off shore). Kind of a drag that you were 99% of the way there and never found the dive site (based on your pictures).
Listen, one dive (or a few) does not make for a well-rounded evaluation of the place. You've heard it from people on here... and there are literally hundreds of dive reports on the web about the amazing life that can be encountered at the Shores. If one chooses to ignore or dismiss the accounts of so many experienced divers, then so be it.
The Shores CAN be an amazing place for encounters. Just last week my partners and I were surprised by a dolphin saying hello to us in 45 fsw, just before the canyon wall. You have to see with better eyes.
Cheers,
Bill