Southland has a long-established fishing industry and is particularly well-known for the famous delicacy, the Bluff oyster. Southland's coastline covers approximately 3,150 kilometres. The deep, cool southern waters of New Zealand's exclusive economic zone contain a wide variety of species, including blue cod and crayfish, or the spiny rock lobster, which is Southland's most common commercial fishing species, as well as Southland's pāua, or abalone, fishery, which is the second-largest in New Zealand. The main fishing methods in Southland are crayfishing and cod-potting, oyster-dredging, trawling, set-netting, hand lines, and diving. Seafood exports account for around 90 percent of the seafood industry revenue, and it consistently ranks as the country's fourth- or fifth-largest export earner, so it's very significant. 