Modern commercial fisheries catch yellowfin tuna with encircling nets (purse seines), and by industrial longlines. Artisanal fishermen utilise various gears including gillnets, seines and hook and line. Now, most pink salmon are taken with purse seines, drift nets or gillnets. Commercial techniques for catching wild shrimp include otter trawls, seines and shrimp baiting. Small numbers of viper dogfish are caught incidentally in purse seines and bottom trawls. European anchovies are caught with purse seines, lamparas, trawls and beach seines. Two main types of seine net are deployed from seiners&colon; "purse seines" and "Danish seines". Atlantic menhaden are harvested using purse seines. Typically, sardines are caught with encircling nets, particularly purse seines. They are mainly caught using haul seines, gill nets, and line gear. It is commercially caught on trotlines, setlines, hoop and trammel nets, and seines. Boats equipped with purse seines are called purse seiners. The ideal method for catching chub mackerel is round-haul gear such as purse seines. Tuna seines are particularly problematic for entanglement by dolphins. Juveniles are occasionally taken by beach seines.