Breakwater is an awesome place to dive. I went expecting to solo dive both times, but was lucky enough to join groups each time. We had a great experience. You have an almost 100% chance of seeing sea lions (if you go out far enough). Warning: there is a man that hangs out here (older and scruffy, I know his name but to protect his privacy probably should not mention it). Local divers have warned me about him. If you are going in solo, he will probably approach you (as he did me). You want to avoid diving with this guy. I told him I was meeting other people out there and he left me alone. Unfortunately, I believe he may suffer from mental illness. Other then that, this is a must dive spot if you are in Monterey.