The Arctic Ocean waters are so cold that they develop a thick layer of sea ice on the surface during most of the year. The cold waters of the Arctic would seem to be inhospitable for life, but a rich ecosystem is present.

Click on the links below to find out more about the waters of the Arcic ocean and the ice that is ever present:

Sea ice formation Where to find Arctic sea ice
Types of sea ice Polynas
Multiyear ice Leads
Annual ice