Fishing technics

Demersal trawl :The demersal trawl is a conical net trailed by a ship. It is connected to the boat by steel cables called funes. Divergent panels located in front of the trawl allow its horizontal opening. The cables that connect the trawl to the panels are called arms.

Pelagic trawl : The pelagic trawl is a trailed net that evolves in open water, between the surface and the bottom, without touching it. Like the demersal trawl, there are single pelagic trawls trailed by a single ships and bottom pair trawls hauled by two trawlers. In general, the pelagic trawl is much larger than the dermersal trawl. Its anterior part is made of simple ropes or very large meshes, which gathers the group of fish towards the posterior part of the net. The immersion control of the trawl is achieved through a sonar located at the front of the trawl, the netzsonde.

Fixed gillnets : The fixed gillnet is a rectangular fishing net locked vertically on the bottom or at a certain distance from it using grapples or enough weights to keep the gear in place. It is visible to the surface by lifebuoys connected to orins (ropes).

Trammel net : The trammel is a fishing net locked on the bottom. It is formed of three adjacent layers. The two outer layers (Les aumées) are high mesh size. The inner sheet (the conduit) is larger to allow blur and smaller mesh to retain both large and small fish. It’s called entanglement fishing.

The beach sein : It is a vertical rectangular net, arched by a boat starting from the shoreline and then returning to it after circumvention of a group of fish. The hauling of the seine is achieved using two long arms.

Purse seine : It is a rectangular net used to surround a group of fish, it is closed at its bottom by a zipper. The fish is then trapped inside the net which transforms into a cylindrical, then conical shape. The fish is hauled using a net that is called a brailer.

Purse seine with a lampara : The lampara fishing is used at night. The fish, attracted by the light of a lamp, gather near the boat: they are then captured by the net, often using a non-sliding purse seine.

Long lining  : It is a line of a long length (several hundreds or thousands of meters) which uses a main mother line on which are fixed many hooks using branch lines of varying lengths and spacings depending on the desired species and the type of longline. The bottom longlines and the surface longlines are different.

Tunny nets : It's a trap locked on bottoms. It is a net of several kilometers set on the passage of a migration route of large pelagic (Tuna). These traps are specially designed to capture only the desired animals.

Cage farming : They are traps made of wood, plastic or metal, in the shape of a cage or basket. These traps are mainly used for catching crustaceans (lobster, spiny lobsters, crab...).

The octopus catcher (Poulpier) : Intended for catching the octopus, these are the gears that are mostly used. They consist of casseroles attached to each other in which the octopuses come to move in.

The jigger : It’s a fishing gear composed of a lure and hooks (basket). In its most rustic form, the jigger is simply composed of a plumb or not, equipped with spikes. The jiggers can mimic the shape of small fish or shrimp, They can be phosphorescent or bright.