The use of locks to fish is a practice dating back centuries 6. In the 1900s there were still 140 locks to fish on the island of Ré. These locks are part of the heritage rétais.
They were real small dams which came crashing waves and protecting the coast. But it brought to the island more isolated than a food supplement not negligible.
The causes of this neglect are many: the migration of many rétais to the continent, modern agriculture is the full-time farmer and fishing is no longer a necessity, intensive fishing fish scarce, maintenance of locks application long time ...
"The parks will be built rows of stones in the shape of a half-circle and rose to the height of four feet, at most, without cement or masonry ..." Colbert this order shall specify the manner of its construction.
Build a lock is a long job for months, when the tide is low a score of people assemble tons of stone without any binder to form the wall, which must withstand storms.
To lock it takes between 10 000 and 20 000 hours.
Each lock has a name, the flagship of whales is called skunk.
The width of the lock varies from one hundred meters to 500 meters, while the length of a wall that the belt can be achieved over a kilometer long and a height of up to 3 m.
At high tide the lock is completely covered by water and when the sea withdrew the bigger fish are trapped. Water and small fish escape through racks which are openings in the wall fitted with grilles.
There are cuttlefish, rays, sea bream and garfish, sole, bars, mules ...
Today all that remains of a dozen locks retained or rebuilt by amateur enthusiasts.
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