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When some trammel fisheries were observed, it was found that a number of cetacean species were "incidentally captured" in trammel nets, including harbour porpoises, bottlenose dolphins, common dolphins, and striped dolphins.
ACCOBAMS
http://www.ukmarinesac.org.uk/activities/fisheries/f2_2.htm
Ghost Fishing: When trammel nets are lost or discarded,
they, like gill nets, continue to "fish" and kill marine creatures.
The available data clearly demonstrates that trammel fisheries
should be monitored by independent observers, as a matter
of priority, in order to establish accurate cetacean bycatch figures.
A Cetacean Bycatch Response Team should then develop a
Bycatch Response Strategy to reduce the number of cetaceans
killed in pelagic trawl nets.
It has become apparent that no single measure will reduce cetacean bycatch to an acceptable level, in any fishery.
It will require a combination of measures. Unless the Common Fisheries Policy is amended to incorporate a Cetacean Bycatch Response Strategy, thousands of cetaceans will continue to die in European waters.
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