Dkerr, glad you had the chance to dive our little world. Diving in the kelp has got to be one of the best dives anyone could experience. Getting the opportunity to see the magnificent giant sea bass is definitely a bonus.
Amadeus, the water temp right now is at 60 degrees. By July it should be near 65 (that is about as warm as it gets). I normally dive the summer months in a 2 piece 3 mil, hood and gloves. That keeps me warm. I did run into a thermocline last summer when I went around a "kelp wall" in about 60 fsw. The water temp went from a very balmy 65 to 55. Needless to say, I got out of there quick, and back to warmer water.
For those who are thinking about visiting Catalina, Casino Point is a must dive. It is a very easy shore dive in a marine reserve. So the fish are abundant and "friendly". You will see the Garibaldi, sheephead, calico bass, blacksmith, senoritas, kelpfish, kelp bass, opal eyes, spiny lobster and blue goby without too much effort. If you are lucky you might come across horn sharks, octopus and eels if you look for them.
As far as vis, you will probably have anywhere from 30 to 70 fsw.
Topside during your SI in the summer you will find a dockside restaurant that is nice. A short walk into Avalon will get you plenty of food choices and AFTER you are finished getting wet for the day some "spirits" along the boardwalk.
To find out more about Catalina and packages available check out
www.catalina.com