Diving up here is really all about busting your butt & spending as much time on the bottom as you can! Knowing what areas hold what types of fish is invaluable as you can waste tons of time scouting over fishless terrain. In the end, it's just putting in the time to find the productive spots and working the grounds effectively...
Most of the fish don't move very much from their area & are realistically quite easy to shoot.
The following link is for 2002 nationals held in Carmel:
http://www.spiderwebpub.com/carmel2002/fish.html
They neglected to mention Sheepshead & Calico Bass - the only two fish I look for down there with the recent closures.
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Blue & Black rockfish are the most common fish in Nor Cal. Closed now, but they are abundantly located mid-water through out kelp patches & around structure - much more heavily populated in Sonoma/Mendocino area than Monterey/Carmel. Easy to locate & pretty easy to approach & stone.
Lingcod, Cabezon, Gopher Rockfish, China Rockfish, & Grass Rockfish are bottom-dwellers usually found in cracks/holes or perched outside. Easily approached & just as easily speared, they are good eating & sought after. Unfortunately, as with the rockfish, they are all off-limits till July 1st. :waterwork
Calico Bass are only found in the southern dive spots of Nor Cal (i.e. Monterey & Carmel). Frequently seen scooting away, distinguishable by their white spots, they associate with kelp & both stealthy drops and appealing to their curiosity are great techniques. They learn to fear divers quickly, so often one wrong move & they bolt. Good eating & with the closure - my favorite target.
Sheepshead are also found in the southern dive spots of Nor Cal (i.e. Monterey & Carmel). They frequently associate with pinnacles as structure as well as holes/cracks. Slow & docile free swimmers, they are easy to shoot, but sometimes become wary of divers and keep their distance. Sheepshead are often territorial and you'll be able to find others in the same vicinity.
Greenling are the slender little fish that you'll find scooting around holes. Decent eating & often inquisitive, they make easy targets if you're so inclined. They're off-season now too.
Perch. You'll be able to find these anywhere. Open season & typically quite abundant - if you like to eat them, you'll be in heaven
Opaleye - usually only found in Pacific Grove area, they are widely abundant. While many don't like their taste, I have a few friends who will gladly take them off my hands, so I usually oblige & shoot a couple for them. They sometimes hole up, but are generally free-swimmers in schools or solitary.
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I'm sure I missed some, but that's the gist of the main fishes. Any questions pertaining to a particular species, I'd be glad to extend my limited knowledge :hmm
Whew, that's an Iya-sized post!
Karma's in the bottom right corner