2: Physical Oceanography of Polynyas: 4 Biological Importance of Polynyas.

The section Biological Importance of Polynyas of chapter 2 of the book "Polynyas: Windows to the World," edited by Walker O. Smith Jr. and David G. Barber is presented. The section of the chapter explores on the importance and impacts of the physical processes within polynyas to the processes. It relates the situation of the Siberian flaw polynyas which supplies large quantity of ice to the Trans-Polar Drift.