One of the most interesting sporting traditions in Santurtzi are the rowing competitions in local traineras or estropadak as they are known in Euskera. Every summer there is a very hard fought competition between a number of vessels from northern coastal ports, which goes by the name of "Bandera de Santurtzi". This town has one of the most renowned traineras, la Sotera, which has won important local and national prizes, mainly in the 1970's. The roots of this competition lie in everyday activities. The first vessel to reach the possible shoal of fish, indicated by the seagulls, and to return to port, obtained the best price.