Point Lobos, California.
Sure the chances of visibility over 10m is slim, the water is cold (12C/54F).
But I have had some create dives there. The Canyons by Granite Point are just the right size that you don't feel closed in but you feel like you are flying. There wild life is rich, not a s brightly colored as Caribbean or even the lively parts of the Mediterranean, but the life is much denser and more varied. I love how there is life at every scale.
I have swam along side a grey whale, and observed the tiny shimps. Seen a mother sea-otter clean herself while her baby screamed next to her. Had a Harbour Seal check on one of my dive buddies dive computer. (He really was paying to much attention to his computer and didn't notice the seal right next to him, until it pulled on his arm to take a look at his computer.)
But there is ground cover from different types of snails and nudibranchs. At the shore when getting out there are always lots of crabs and rock fish hiding in the support wall for the parking spot.
Also I simply love kelp forests, and nothing else compares to them.
