September/October 2005 Volume 1, Issue 3
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©2005 Tsunami Fishing Systems

 
View from the Helm

Miscellaneous notes and interesting observations...


Seafood Guide | Issue 2 Survey Results |  E-Tec Update | Deep Jigging Update | View from Below  
The July 2005 issue of Pacific Coast Sportfishing had an interesting article titled "Lessons from Down Under", by Terry Maas. Terry Maas is an expert open-water spearfisherman, and in this article he shares his observations on yellowfin tuna behavior offshore. Here are some of the more interesting points:
  • Free divers usually stake out an area and wait for the YFT to come to them. Favorite spots are islands or underwater ridges in 20 fathoms or less. The most productive zone for them is where the resident baitfish on the bank meet with the more migratory bait like mackerel and skipjack tuna. This is usually somewhere upcurrent from the structure, anywhere from 100 yards to a quarter mile.

  • While smaller yellowfin tuna segregate by size, schools of fish over 50 pounds tend to have mixed sizes, with the larger fish 10-20 feet deeper than the other fish, and farther back in the school.

  • Free divers confirm what we've known for a while - tuna and other pelagic fish orient towards floating debris, but are usually not directly under it. YFT can be several hundred yards off the debris.

  • When YFT and dolphin swim together, the tuna do the "heavy lifting" of chasing down and ravaging baitfish. The dolphin follow the school and pick off the leftovers. So fish well ahead of working dolphin!
 
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