1. Overfishing. Biomass has been declining and is presently estimated to be at its lowest observed level.
2. Greenland halibut are highly vulnerable to fishing pressure and have low resilience, making recovery difficult.
3. Trawling for turbot impacts sensitive areas and species such as cold-water corals and sponges.
Greenland halibut live as deep as 2000 metres below sea level.
They are a slow-maturing species that can live up to 30 years.
The heaviest Greenland halibut on record is 45 kilograms, and they can grow up to one metre in length.
They feed on crustaceans, fishes, deep sea prawns and other invertebrates.