Tide drives bait, predator behavior, and water clarity — and most California divers ignore it. Here is how to read the four phases, slack versus moving current, tidal range, and the best tide windows for white sea bass, yellowtail, halibut, and reef species.

The color of California water tells you what is in it and what to expect underneath. Learning to read color is a 30-second skill that saves wasted dives.

Fish detect divers through vibration before they see them. Understanding the lateral line changes how you move in the water.

Upwelling events drop California water temperatures by 10-15 degrees in a single day. Why they happen, how to recognize them, and the tactical adjustments that produce fish during sudden cold water rather than waiting for conditions to recover.

The June 14 new moon is one of the strongest WSB windows of the season. How to find squid beds, when to dive them, and the tactical approach that puts trophy white sea bass on the stringer.

I built a trip optimization tool to skunk-proof your next fishing trip.

California's 2026 bluefin season is starting early and showing inshore - the marine heatwave plus El Niño is pulling fish closer to the coast than typical years. Here is what divers are seeing, where the fish are stacking, and how to plan trips through summer.

California summer 2026 has more dive trip options than any other time of year. Bluefin trips offshore, yellowtail at the islands, Baja runs, Hawaii crossovers, and inland-coastal getaways. A planning framework for the trip worth taking, based on the conditions and species patterns shaping this El Niño season.

Iceland and the Faroe Islands offer some of the most extreme cold-water diving on Earth - 35-50°F water, dramatic landscapes, and big cod, halibut, and pollock for divers willing to accept the conditions. A practical guide to the North Atlantic's most committed diving destinations.

California yellowtail are stacked at La Jolla and the Coronado Islands and pushing north toward Catalina and the Channel Islands. A current snapshot of where the schools are, how they are behaving, and where the next 2-4 weeks of season are heading.

Drifting kelp paddies offshore are floating fish magnets - yellowtail and dorado work the up-current side, bluefin tuna sit in the down-current shadow. How to spot a productive paddy, follow the current line to find more, and approach without spooking the fish.

Leopard grouper - cabrilla - are one of the most consistently catchable spearfishing targets in the Sea of Cortez. How to identify them, where they hold, and how to take them efficiently.

Why Iki-jime is so much better for your fish than just standard bleeding?

A complete guide to spearfishing Guam, Saipan, Tinian, and Rota — the CHamoru tokcha tradition, target species, regulations, conditions, and how to plan a Western Pacific trip on US soil.

Divers' spear gun floating by itself after diver blocks out.

Most divers blow shots by moving too fast. The craft of hunting fish is built on slow approach, patient waiting, and a smooth trigger. Here is how to stalk calico, sheephead, white sea bass, halibut, and yellowtail in California waters.

Skip the Bahamas price tag. The DR and Puerto Rico deliver warm water, clear visibility, and loaded reefs of hogfish, snapper, grouper, and lionfish for half the cost. Here's where to dive, when to go, what to shoot, and how to do it legally.

New to spearfishing in California? Complete beginner's guide to gear, regulations, dive spots, safety, and building skills from your first dive forward.

Ciguatera poisoning is a real risk for divers eating tropical reef fish. Learn which species carry the toxin, which regions are highest-risk, and how to avoid getting sick.

Calico bass are the bread and butter of California reef diving. They are abundant, accessible, and great to eat. Here is how to find them, approach them, and why they are the perfect fish for building your skills.