In tropical tuna freezer fleets, the incidental capture of small sharks and turtles is relatively frequent. These species must be returned to the sea to continue their life cycle, making it essential to minimise the impact of fishing activities on marine ecosystems.
AZTI has developed wildlife release systems. The installation of hopper devices with ramps simplifies the process of returning unwanted species to the sea, reducing animal stress and improving safety for fishers on board.
Results show that 95% of accidentally caught sharks were able to be released directly thanks to the developed devices. In addition, through shark tagging programmes, it has been possible to monitor the survival of released individuals.
Sectors: Fisheries and aquaculture sector
Research lines: Blue Economy, Efficient, sustainable fisheries and aquaculture
Research sublines: Conservation and restoration of marine species and habitats, Sustainable fishery management