Oceanography is the study of the ocean. It covers a wide range of topics from marine life to the geology of the sea floor to the physical properties of the ocean. Physical oceanographers study the physical components of the ocean including light, waves, tides, currents and the composition of sea water. The physical properties of the ocean can
This short article is an U.S. Fish and Wildlife Service fact sheet about Ursus maritimus, the Polar Bear. It covers basic information, including: appearance, feeding habits, reproduction, adaptations, and protection.