Moon phases drive tides, fish behavior, and feeding patterns. How divers can use the new moon, full moon, and quarter moons to plan productive spearfishing days.

The thermocline is where warm surface water meets cold deeper water - and where many predator species stage to feed. How to find it, what fish hold there, and how to hunt them.

Spearfishing San Diego: a region-by-region breakdown from the Mexican border north to Oceanside. Where to dive, what to expect, and how to pick the right spot.

Red tide kills viz, can make you sick, and changes where fish hold. How to spot it, when it's safe to dive, and what to do if you encounter a bloom mid-trip.

Giant black sea bass were nearly wiped out of California waters by 1980. Forty years later they are coming back. The full story of California's largest reef fish.

The mammalian dive reflex is the autonomic adaptation that lets humans dive deep on a single breath. How it works, how to train it, and why it matters for spearfishing safety and performance.

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

Building your Spearfishing gear over time. A 12-month gear roadmap

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

Don't be that guy. Don't post pictures that expose spots.

Southern California's forecast for May 2026.

A practical guide to spearfishing depth: typical hunting ranges by experience level, what actually limits your depth, equalization techniques, safety protocols, and how to build up safely without blowing an ear or lung.

Speargun bands are the engine of your gun. Every bit of power you put into a shaft comes from how well your bands store and release energy. And yet, bands are also the most commonly neglected component on any setup. Divers will spend $800 on a gun, $200 on a slip tip and shaft, and then run the same pair of tired bands for three seasons until they snap on a shot at a personal-best fish. This guide covers how to know when to replace bands, what to buy, how to install them corr

Understanding the different types and of roller spearguns

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.

A complete guide to CO2 and O2 tables for freedivers and spearfishing divers — what they train, sample protocols, safety rules, frequency, and how table work translates to longer bottom time on hunting dives.

Master the hip-driven freediving kick. Learn proper biomechanics, common mistakes, ankle flexibility, and depth-specific technique to conserve oxygen, hunt silently, and dive deeper with less effort.

Why freediving snorkels ditch purge valves, splash guards, and dry tops in favor of a simple, flexible J-tube. A California diver's guide to picking the right snorkel, using it correctly, and knowing when to skip it.

A complete guide to spearfishing fish cleaning: field care, bleeding and icing, choosing a fillet knife, step-by-step fillet technique, species-specific tips, parasites, storage, and quick-cook ideas.

The breathing sequence you do before a freedive determines how safe and productive it is. Learn the proper breathe-up protocol, why hyperventilation is dangerous, and how to dial in surface intervals, heart rate, and mental cues for every dive.