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Sunny days are more favourable
As well as being pleasant, the sun is a factor that greatly influences bluefin tuna activity. But why?
A short theory lesson on the basics of the food chain.
Plankton is the element at the very bottom of this food chain.
It uses the chlorophyll in its cells to photosynthesize. Its growth depends on sunlight, nutrients and water temperature.
Chlorophyll and water temperature are intimately connected. They enable us to identify areas on which plankton migrate vertically. This movement of plankton attracts forage fish, which are then followed by predatory fish such as bluefin tuna.
The effect of coefficients on the hunting
There's a link between coefficients and tuna activity zones . At during spring tides, with high coefficients, the current is stronger at the coast than offshore. Small prey are carried away by the speed of the current, complicating the tuna's hunt.
This is why they sometimes several dozen miles offshore to find areas less exposed to the current . You so you'll need to focus your search on areas far from the coast.
The history of years past
Bluefin tuna is a fish on the move to grow. To do so, it is constantly on the lookout for food. Several studies show that this migratory fish is able to remember and "pass on" the areas of its range favourable to the development of the species.
So, year after year we the fish are found in the same areas at roughly the same times.
Try to keep your head a history of past sessions. This will be invaluable for future outings.
Navigate to proximity bathymetric lines
Sounding lines, or bathymetrics, indicate underwater landforms. Near these areas, marine currents form, carrying nutrients from the depths to the surface, stimulating the growth of phytoplankton, the basis of the marine food chain. This explains the presence of forage fish and predators in these areas
When I'm short of inspiration i position myself close to a bathymetric line of between 50 and 70 m and are until activity returns.
Follow the birds
In this fishery, even more than elsewhere, birds will be your best allies. Like you they are in search of the forage fish tuna feed themselves. They have one advantage over us: the ability to move fast and see far.
When I come across birds that seem to be looking for fish like me, I keep a close eye on them and don't hesitate to follow them, sometimes over long distances.
Experience shows that they often end up leading me to zones where tuna are present.
The search for areas where tuna are active can from time to time be complicated. If you can exchange information with other anglers, the search will be much easier. In in any case, don't be discouraged - you'll find them sooner or later.
