Annually, 300,000 dolphins and whales are dying as bycatch in longline nets.
Once caught in the net, some die from exhaustion, other from shark's attacks.
It represents the highest cause of death for this marine population.
Scientists, from the International Whaling Commission think that reducing bycatch would considerably drop the rate of mortality.
The thousands of miles of nets set in the world oceans are a real danger for whales, dolphins and sea turtles survival.
Nets are invisible to sight and sonar and are too strong for small mammals to pass through. This high level of bycatch is depleting and endangering the marine population.
This problem may lead to some species extinction if nothing is done to protect them.
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