I was in San Diego for a day (Dec. 12, 2013) and wanted to go diving. There weren't any dive boats going out that day so I came to La Jolla Cove for a couple of shore dives. Visibility was about 30 feet. This is a very shallow spot. Around the outside of the cove it was about 15 feet deep. We also swam out to the kelp forest which was about 30 feet deep.