The Tonga NPOA (sharks) is a policy guideline that ensures conservation and management of oceanic sharks in the Kingdom’s fisheries waters. It also promotes long-term sustainability and optimum use of sharks in Tonga’s Tuna longline fishery in accordance to national development policy frameworks, and special needs and requirements to develop and commercialise its fisheries. In the medium-long term, the Plan serves to minimize any adverse environmental effects of fishing on oceanic shark species.
This report provides a review of our knowledge of the bycatches, defined as
discarded dead, from the tropical tuna purse seine fisheries of the world. The major
fishing grounds involved (eastern and western Pacific, eastern Atlantic, and western
Indian Oceans) share the gear, the ways of fishing, and the structure of the pelagic
communities. Because of that, the species taken in association with tuna schools tend
to be the same in all regions.