Breakwater is a great place to try out Northern California diving. It is always diveable. True, the visibility can vary from 5-40ft. There is an abundance of sealife including seals, sea lions and otters. Along the wall you will find nudibranchs anemone, etc. Don't miss a trip out to the metridium field. It's otherworldly. At night you will see octopus, shrimp and so many fish! Between dives I recommend eating at the deli on the breakwater. True the proprietors are a bit stoic but they are very nice and the food is excellent. Try the pulled pork. I'm an instructor and I must dive 50 dives/year here.