Global salmon giant Mowi is stepping up monitoring of the farming area in Eastern Canada where 92,700 nearly harvest-ready fish died last week as a result of what is likely low dissolved oxygen levels in the water.

The losses occurred at a Mowi farm on the south coast of Newfoundland and Labrador known as The Gorge after Hurricane Larry slammed into the region over the weekend, bringing strong winds and storm surges.

Mowi Communications Director Ian Roberts told IntraFish the company "cannot speculate on the exact cause," but added that "lower dissolved oxygen levels are generally associated with higher summer water temperatures and abundance of plankton."