Deep-sea fisheries in the areas beyond national jurisdiction
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Deep-sea fisheries are those that take place on or near to the sea floor at depths of a few hundred metres down to 1 500 metres or more. Many deep-sea fisheries take place in waters of the areas beyond national jurisdiction (ABNJ) that is also considered the high seas. The great depths and distances from the coast pose scientific and technical challenges. The deep-sea ecosystems have become the iconic “last frontier” for the expansion of marine fisheries but have also raised concerns around their impact on biodiversity. However, these fisheries were at their peak in the 1970s-1990s, and have since stabilized at lower more sustainable catches with reduced numbers of vessels and improved monitoring and mitigation of impacts on biodiversity.