Marine Harvest ASA (OSE:MHG, NYSE:MHG): Algae Bloom in Chile Region X

Marine Harvest has experienced a severe algae bloom in our Chilean operations in
Region X. Three sea water sites are affected; Punta Redonda, Huar Sur and Huar
Norte. We have stocked 2.9 mill fish at these sites and the average live weight
ranges from 1.5 kg to 2.5 kg. Approximately 1.2 mill fish has currently suffered
mortality. Our biomass is insured.

This information is subject to the disclosure requirements pursuant to section
5-12 of the Norwegian Securities Trading Act.



[HUG#1990431]