Freediving in the Cove is a good first start. Post production would help a little. Have you considered identifying the critters you spot? As a scientific diver (I assume through one of the UCs) your knowledge would add value to the production. The abalone you show, was that a green ab? Scientific name? Too boring for your viewership? You have the ability to find the critters and focus in on them. A video light would help too. It is remarkable how the power on the lights has been going up as the price and size has been coming down. Are you looking to tell a story, or just chronicle your dives. Is this meant to be a video log book? If so, provide some of the log book details (depth, location, vis, etc)
That said, I did like the music you selected for a couple of your videos.
Who is your target audience for your channel? Is it youngsters like yourself? If so, the self-described juvenile behavior present in your sunset dive video will have you top out viewership at the number of friends you have on your Facebook page, assuming you can induce all of them to watch your videos.
From what I see, there is little to distinguish your videos on your channel from the dozen or hundreds of other videos. What I will call the "socal fratboy with tanks" genre has a very limited following and having seen one video, the clones quickly become tiresome, kind of like watching someone's super 8 home movies of their vacation at Yellowstone. Its kind of like watching backyard boxing videos, not much talent, lots of time wasted, a lot of talking, no real skill demonstrated but a cool punchout every so often..
You have an interest and a talent, so stay with it.
Thirty years ago I helped train a neophyte scientific diver in Socal. We dived our brains out, mostly beach dives because we couldn't afford boats too often. His first camera was a Sea and Sea Motor Marine II that he first used when we did a winter break trip to Baja, camping on the beach. Today he is one of the best marine wildlife photographers in the world. He got there one image at a time, one dive at a time.
