Orange County has a lifetime of diving packed into a relatively short stretch of coast, and most of the best of it is concentrated around Laguna Beach. This is our overview - a north-to-south tour of the popular sites, plus a few standouts beyond the county line - to help you decide where to get wet. For most of these spots there are detailed guides out there with maps, parking, site features, and hazards; think of this as the big-picture map that points you in the right dire

California's spiny lobster season opens in early October - and for a lot of us that's the highlight of the fall. With the opener now about two weeks out - it opens Friday, October 2 at 6 p.m. - and the water finally cooling into prime bug-diving range after the Marie swell, now is the time to get your gear, your paperwork, and your spots sorted. Here's the checklist.

If you dropped into Shaw's Cove this week and thought the bottom looked... different - lower, rockier, more reef than you remembered - you're not losing your mind. The big south swell that ran through over Labor Day did what big swells do: it grabbed the sand and moved it. Here's what happened, why it happens, and what it means the next time you gear up.

Over Labor Day weekend, the leftovers of Hurricane Marie threw a giant south swell at Southern California, and the whole coast felt it. The storm itself never came close - it stayed 700-plus miles to the south and west - but the long-period energy it fired off put High Surf and Coastal Flood advisories on the map through Tuesday, and set off a chain reaction that touched water temperature, visibility, the shape of our favorite coves, and even what showed up on the reef.

The swell that worked Southern California over the holiday weekend - Saturday through today, Monday, September 7 - was a strong south to south-southwest swell thrown off by Hurricane Marie. What made it worth writing about was not the size so much as how directional it was. Some beaches got hammered while a cove a few hundred yards away sat almost calm. That is the whole story of this swell, and it is a good lesson in how to read a south swell as a diver.

It is Labor Day weekend, and the water is doing exactly what you would expect for early September - warm, blue offshore, and worth the effort if you pick your spot. The late-August blow that browned out the coast has settled down, the diving is coming back, and the warm water has the coast loaded with fish worth putting a shaft in. It is also one of the busiest boating weekends of the year, so staying visible and staying safe in heavy boat traffic needs to be front of mind. H

If you dive the Marine Room regularly, you already know the drill. Some mornings you wade in off the sand and can see clear across the flats. Other mornings you put your face in the water and can barely see your own hand. Same beach, same short walk from the car, completely different day. I get asked all the time whether the brown water is runoff, the tide, or the swell. At the Marine Room it is almost always the swell, and once you understand how it works you can tell what y

If you have walked a Southern California beach this week, you may have seen it: a sea lion hauled out well above the waterline, head weaving, unresponsive or, worse, thrashing in a seizure. Dead and dying dolphins have shown up on the sand too. This is not random. It is a harmful algal bloom, and the toxin behind it - domoic acid - is worth understanding before your next dive.

The California spiny lobster opener is roughly six weeks out - it lands in early October. The divers who limit out on opening night are not lucky. They did the work in September: scouting reefs, servicing gear, and dialing their night dives while everyone else was waiting for a calendar square. Here is how to spend the next six weeks so opening night is about bugs in the bag, not troubleshooting in the dark.

Rockfish are California's bread-and-butter reef catch. Here's how to identify the key species, hunt them effectively, and stay legal under the state's depth and seasonal rules.

A boat anchor that drags during a dive ruins the day. A boat anchor that hooks rocks and refuses to come up ends the day. Here is the setup for each California bottom type.

If you have spent any time diving the rocky reefs and kelp beds of California, you have almost certainly encountered a cabezon. With their massive heads, fleshy skin flaps, and mottled coloring that ranges from deep red to olive green, cabezon (Scorpaenichthys marmoratus) are not winning any beauty contests. But what they lack in looks, they more than make up for in table quality. Cabezon are one of the best-eating fish in California waters, with firm, sweet white meat that r

California's giant sea bass can top 500 pounds and live for decades, and this protected gentle giant is strictly look-don't-touch. Here's where to encounter one, how to behave, and how divers can help its remarkable comeback.

Shore divers in California deal with surf zones every dive. Here is how to enter through breaking waves and exit without getting tumbled.

Between Big Sur and Santa Barbara lies a stretch of coast few divers explore - Cayucos, Morro Bay, Montana de Oro, and the reefs around Point Buchon. Here is what the SLO coast offers and how to dive it.

On the Central Coast, summer runs backward: cold, green, and calm, with shore visibility routinely 3 to 8 feet even on glassy days. Here is why upwelling and blooms flip the season, and how to dive around it.

Big surf from Baja hurricane swell doesn't always mean bad visibility — how swell period, spot exposure, and depth decide if the water still dives clean.

Essential spearfishing safety tips for San Diego — shallow water blackout and the buddy system, boat traffic, kelp entanglement, surf entries, and conditions.

Where to take a spearfishing class or safety course in San Diego — freediving and blackout-rescue training, plus online options to learn before you dive.

San Diego's surface could touch 74°F this week. Here's what that means locally — accelerating kelp rot, worsening blooms, murky warm shallows over cleaner cold water — and how to still get a good dive in.