Almadraba tuna is tuna caught by an elaborate and age-old Andalusian and Algarvean technique (initially introduced by the Moors) of setting nets in a maze that leads to a central pool called "copo". In Sicily, the mazes of nets, and also the places where the nets are set are called Tonnara, and the overall method of capturing the fishes is called Mattanza. This takes place during spring and the beginning of summer when tuna tend to go into the Mediterranean.
The maze uses just two net lines, called "raveras". One net is connected to the shore and other line is secured in deeper water. Those lines have smaller oblique lines which lead to the central pool. This simple maze works because tuna are not able to see the exit from the central pool, and remain inside. The floor of the central pool is then raised in order to catch the tuna and when that floor is held up, there is little room left for tuna and they are then caught easily and slaughtered.
 In film
 See also
- Favignana, a Sicilian island where mattanza is still performed in May.
- The Dukes of Medina-Sidonia made their fortune on the monopoly of Andalusian almadrabas from the 12th to the 19th century.
- Zahara de los Atunes, an Andalusian town named after the tunas of its almadraba.
Preserved Tuna and Almadraba Roe from Barbate (Cádiz) Spain