05/21/2010 - Global measures to regulate the fishing industry lack the capability to tackle illegal catches, warn researchers.
Writing in the journal Science, they say that up to 26m tonnes of fish, worth an estimated $23bn (£16bn), are landed illegally each year.
They add that a global monitoring and information sharing network is needed to crack down on illegal operators.
Eighty percent of the world's fish stocks are deemed to be fully or overexploited.
"Illegal, unreported and unregulated (IUU) fishing is a global problem and it needs a global answer," said co-author Kristin von Kistowski, a senior adviser to the Pew Environment Group, a US-based think tank.
"By creating this first comprehensive overview of port state performance, we have identified the weaknesses and problem in the system."
Read the full article, Ports 'Failing to Halt Illegal Fishing', on the BBC News Web site.