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

September is the month that usually rewards patience. The water stays warm, the crowds thin out after Labor Day, the wind lays down in the mornings, and the swell windows get longer. It is, in a lot of years, the single best diving month on the California calendar. Here is how the month is shaping up and where the opportunities are.

This is what actually happened in the water in August, region by region, grounded in dozens of in-water reports and the offshore intel that shaped the month.

You have probably seen the map going around, the one with the big orange arrows pushing warm water up the California coast and a bunch of sharks and sea snakes riding along with it. It looks dramatic, and honestly the basic idea is real. A strong El Nino warms up the eastern Pacific, and that warm water pulls a lot of southern species north with it. Some of that is great news for us as divers.

The tropics are awake. Tropical Storm Iselle, the first named eastern-Pacific storm to matter for us this season, is pushing a south swell toward Southern California mid-week. It is not a giant - the forecast is a modest mid-period pulse, roughly chest-to-head-high at exposed south-facing breaks, building Tuesday, peaking Wednesday, and easing Thursday - but even a modest south swell changes where and how you should 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.

A dive plan is only as good as the water you actually get into. Right now a handful of spots on the California coast are posted, closed, or worth a hard second look before you commit - and a couple of them are the kind of closure you do not want to push through. Here is a quick rundown of what to know this week, plus how to check for yourself before you make the drive.

A group member watching the pier cam this week sent in a fair question: 'Does anyone know why it's so particularly bad this week?' If you have been staring at green, stirred-up water and wondering what happened, you are not imagining it. The short version: this is not one problem, it is three late-summer factors stacking up at once - a lingering swell, a sudden upwelling flip, and the plankton bloom that upwelling feeds. Here is what is going on under that murk, and when it s

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.

Barred pargo are abundant, accessible, hard-fighting, and excellent on the table - but most traveling divers overlook them for flashier targets. Where they hold, how to hunt them, and why every Sea of Cortez diver should know this fish.

If you tried to dive the Southern California coast in the last week of July, you already know: a run of big south swells stirred the bottom and blew the inshore visibility to pieces right when the summer bloom had finally started to settle. That's not bad luck — it's the season. Late summer is Eastern Pacific hurricane season, and distant tropical systems off Baja and mainland Mexico fire long-period south swells straight at our coast for weeks at a time. Here's the fix.

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

August is the warmest month of the year in California waters — and, in a normal year, the tail end of the peak plankton bloom. But 2026 has been anything but normal. After an early June bloom and a persistent marine heatwave that defined July, August arrives with the surface as warm as it will get all year and the coastal murk finally starting to ease.

If June 2026 was the month the bloom ambushed California six weeks early, July was the month divers learned to live with it. The plankton didn't vanish — but a persistent marine heatwave, a warm surface lens, and a reliable afternoon clearing pattern gave patient divers real windows. This is what actually happened in the water in July, region by region, grounded in dozens of in-water reports and the offshore intel that shaped the month.

The technique for proper beer-battered fish and chips at home: choosing firm white fish like rockfish, lingcod, or halibut, mixing a light cold batter, controlling oil temperature, and frying chips that actually stay crisp.

June 2026 will be remembered as the month the bloom came six weeks ahead of schedule. Across California's dive zones—from Monterey to San Diego—the combination of marine heatwave warmth at the surface and persistent cold-water upwelling at depth created a perfect storm for plankton productivity. The result: an early-June red tide event that hammered visibility from the Bay Area through Orange County, with only offshore pinnacles and depth-access sites offering reprieve.

Laguna's coves are beautiful, sheltered, and almost entirely closed to take. Here is how to understand South Orange County's marine protected maze and where divers can still legally hunt.

Experienced divers find fish before they get in the water. How to read kelp canopy from a boat or shore to identify the most productive zones, the bait activity signs that matter, and the surface tells that separate fishing dives from sightseeing dives.

Where the sun is in the sky changes everything about visibility, fish behavior, and shot opportunity. Here is how to use it.