Channel Islands Harbor is a bit spread out for my liking. I can identify 3 separate areas to visit.
If you take Victoria Blvd. straight across Channel Islands Blvd, you will end up at Fisherman's Wharf. There's a fresh seafood market/restaurant and Duffy boat rentals, but every time I've been it's quiet and doesn't feel like there's much to see. Charter boat excursions depart a bit further down Victoria from here (closer to the harbor entrance).
Take Victoria and turn right on Channel Islands Blvd followed by a quick left before the bridge (by the fire station) and you'll find Topper's Pizza (YUMMY!). You can walk along the waterfront path and come upon a small park where bands hold outdoor concerts during the summer. Finally, there's The Lobster Trap Restaurant at the tip.
The final (and best, in my opinion) stop is the main part of the harbor. The entrance is over the Channel Islands Blvd. bridge from where it turns into Harbor Blvd. Drive about halfway down the road and you'll come upon the bustle of the Farmer's Market on Sundays. Walk right down to the fishing boats and buy your fish from the fishermen! Or get local produce at the stands - especially great during strawberry season. You'll also find kayak and boat rentals, a boat chandlery, tackle shop, and maritime museum.
The whole trip is worth it if you go to Mrs. Olson's Coffee Hut for breakfast!! It's a local hangout with YUMMY food. (117 Los Altos St, Oxnard). Prepare to wait in line to get a seat, though. Unless you get there early.
Fisherman’s Wharf, Harbor Landing, and the Marine Emporium Landing (www.marineemporiumlanding.com) have shopping, fine dining, and plenty of sailing and fishing options as well. Twenty-six hundred working and pleasure craft call this bustling port home. There are plenty of parks, a swimming beach, and the Maritime Museum.
The Channel Islands Water Taxi, with its painted-on smiling face, is the best way to see the seafront. Call (805) 985–4677 for current schedule and fares.