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Bubble net system to catch fish

Net-less system to catch fish

Inspiring Strategies

Product or process

A system comprising bubble-making chambers, ballast, and conducting and floating tubes is operated from a boat and used to form an underwater wall of bubbles that enables schools of fish to be trapped and subsequently caught by means of a suction pump.
Challenges solved
The bubble-net system minimizes ecological impacts traditionally associated with fishing nets, i.e., capture and death of non-target species and cetacean strandings in operating and phantom nets. The system allows fish to be sorted according to species and size while still alive.
Differences from existing products
The great innovation lies in the absence of nets, which are responsible for approximately 90% of all cetacean strandings (dolphins and whales washed on shore), as well as unwanted capture of turtles and other non-target or threatened aquatic species. This new net-less technology brings a positive influence on the quality of fish caught, economy and ecology.
The biomimicry story
The system mimics the feeding behavior used by humpback whales to capture their prey by reproducing the strategy of using walls of bubbles to corral fish.

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over 5 years ago
Thanks to Duarte Miguel Prazeres for creating this product page and the page for the inspiring strategy.
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About the Product

Company: Instituto Polit├ęcnico de Leiria

Product Phase: Under development

Product Type: System to catch fish

Patent Name: System to catch fish and the respective method of use

Patent Number: WO/2009/156940 A1