Extraction threat
In addition to the threat of oil itself, the extraction process can result in discharges of a number of toxic substances that may pose a threat to polar bears and their environment.
These include chemicals such as oil-based drilling muds which can contain both heavy metals and POPs.
Offshore operations pose the greatest risk, since routine emissions, spills or leaks will be discharged directly into the sea or on the sea ice.
Disturbances due to seismic blasting, construction, transportation and operation of facilities can negatively affect polar bears.
Oil spill risk
A large-scale spill at or near the ice edge, either from a ship or installation, represents the most dangerous scenario for polar bears.
If a major spill occurs at or near areas with high concentrations of polar bear denning sites, for example Hopen Island in the Barents Sea, it could have population-wide consequences.
There is currently no proven effective method for cleaning or controlling an oil spill in icy, arctic waters, where difficult weather conditions are common.
Polar bear populations are expected to come under increased pressure if oil developments in the Arctic go ahead according to industry plans.
Offshore and onshore production
There is one true offshore oil production installation in the Arctic, in the Alaskan Beaufort Sea.
Exploratory activities have taken place in the Barents, Kara, and Pechora Seas, the Sea of Okhotsk, as well as the Davis Strait and the Canadian High Arctic Islands.
Further offshore development is expected, particularly in the Russian Arctic and in the Norwegian part of the Barents Sea.
Onshore arctic oil installations are currently found in Russia, Canada, and Alaska.
Oil and oil products pose serious health risks to polar bears.