Spearfishing Thermoclines: How to Find Fish at the Temperature Break
- Bret Whitman

- May 16
- 4 min read
Most divers feel a thermocline before they think to use it. You drop through 5-10 feet of cold water, the visibility shifts, and suddenly you are in noticeably warmer or cooler water than the surface. That boundary - the thermocline - is one of the most productive zones in the water column for many predator species, and learning to read and hunt it gives divers a real advantage in deeper water.



