sea ice

Ice formed from frozen seawater in polar regions. Most sea ice occurs as pack ice, which drifts across the ocean surface; other types of sea ice include fast ice, which is attached to coasts and sometimes the seafloor or between grounded icebergs, and marine ice, which forms at the bottom of ice shelves in Antarctica. The sea ice of the Northern Hemisphere covers about 3 million sq mi (8 million sq km) in September and about 6 million sq mi (15 million sq km) in March. Sea ice in the Southern Hemisphere ranges from about 1.5 million sq mi (4 million sq km) in February to about 8 million sq mi (20 million sq km) in September.

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• Backpack
• Pack (canine), a group of dogs arranged in a social order
• Pack hunter, other animals that hunt in a group
• Cub scouts group, or a group or gang in a larger sense, as in Leader of the Pack.
• playing cards
• cigarette pack
• expansion pack, a video game needing another one to be played

Pack may also refer to:

• Moving company, an organization that loads goods into containers and then transports them
• Tourism
• Pack, Austria, a municipality in Styria, Austria

See also

• Packer (disambiguation)
• Packing (disambiguation)
• The Pack