Log In

Grades

Subjects

Info

Grades

K-12

Accessibility

Auditory, Visual

Permitted Use

Stream, Download and Share


Part of

NOVA

0 Downloads

101 Favorites

923 Views


Antarctica: Sea Ice

Each winter, the ice apron that surrounds the continent of Antarctica expands from its summertime area of about 4 million square kilometers (1.5 million sq mi) to 20 million square kilometers (7.5 million sq mi). Although its presence has proven treacherous for would-be explorers and commercial shippers, sea ice provides essential hunting, feeding, and breeding habitats to polar bears, seals, and penguins. It also helps regulate temperature, moisture, and ocean salinity worldwide. In this video segment adapted from NOVA, learn how sea ice forms and how its seasonal fluctuation dramatically changes the continent of Antarctica.

Contributor:
Funder:
Producer: