Birds, bait balls and the thermocline: how to find tuna before you see them
You rarely see tuna before the strike, but they leave clues: birds, bait, temperature. What each sign means and how to get close without sinking the feed.
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Transducers: 600 W or 1 kW, frequencies, angles and mounting
Which transducer for trolling, for deep jigging or for both: power, CHIRP bands, cone angle, reach of each model and how it is mounted. With a comparison table...
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Garmin, Lowrance, Simrad, Furuno or Raymarine: equivalents and real prices (2026)
Which model of each brand competes with which, with real prices from Spanish shops (September 2026), sounder power, ecosystem and what the people who use them at sea...
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Fish finder settings for tuna, menu by menu: Garmin, Lowrance and Simrad
The ten settings that change what you see, with their name on each brand and a starting value for tuna. Set once and leave alone.
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Fish on the fish finder: how to recognise tuna, bait, snapper, sharks and dolphins
Eight marks worth recognising at first glance, why a fish draws an arch or a line and how everything changes on DownScan and ClearVü. With our own schematic.
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PescaREC: how to register and declare your tuna catches step by step
Since 20 March 2026 every tuna catch in Spain, kept or released, is declared in the Ministry app. Registration, steps, deadlines and the special bluefin rules, with the...
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How to see tuna on the fish finder: marks, bait ball and settings
Tuna have no swim bladder and mark less than other fish their size. How to set the sounder to see them and how to tell their marks from...
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Bluefin tuna migration routes: when it passes the Iberian Peninsula and a world calendar
From the Atlantic to the Mediterranean and back: the annual cycle of bluefin tuna explained with satellite tags, a map and an area-by-area calendar, from Tarifa to Japan.
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How to identify a tuna and estimate its weight from its length
Fins, finlets and eye to know which tuna you have, and a table with the ICCAT formulas to know its weight without bringing it on board.
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Popping and stickbaits for tuna: when and how
Watching a tuna break the surface on your lure is the most intense moment in this fishery. Here is when it works, which lure to cast and how...
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Bluefin tuna catch and release: how to do it right
Most bluefin tuna caught in Europe go back into the water. Whether they survive depends on what you do in the three minutes after the strike.
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Trolling for tuna: speed, distances and how to set the spread
How fast to troll, where each lure goes and how to rig it so it works. The basics to start trolling for tuna without wasting the day.
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