|Title: Polar Bear and Cubs, Alternative Title: Ursus maritimus, Creator: Steve Amstrup, Source: SL-03407, Publisher: U.S. Fish and Wildlife Service, Contributor: ASSISTANT REGIONAL DIRECTOR-EXTERNAL AFFAIRS.|
File size: 87.6 KB, Format: JPEG image (image/jpeg), Dimensions: Screen: 980px x 643px, Print: 0.82 x 0.54 inches, Resolution: 1200 dpi, Depth: Full Color.
Unless otherwise indicated, resources in the Digital Library System are in the public domain. No restrictions or copyrights are placed upon these materials. You may credit the source of the resource using the information contained in the "Creator" or "Rights" field of the resource record. Download Full High Resolution Image
Generally speaking, works created by U.S. Government employees are not eligible for copyright protection in the United States. See Circular 1 "COPYRIGHT BASICS" from the U.S. Copyright Office.
Anyone incorporating a work of the U.S. Government into a copyrighted work should be aware of 17 U.S.C. § 403. This section requires a copyright notice to contain a statement identifying what portions of the work consist of a work of the U.S.Government.
Photo taken by Steve Amstrup on the pack ice in the Beaufort Sea.
The name Ursus maritimus means maritime bear. Their preferred habitat is the pack ice of the Arctic Ocean. The ice edge and pressure ridges where fractures and refreezing occur provide the best hunting ground. Ursus maritimus: Information
During the Ice Age, seals adapted to life in icy northern seas. Their need to breathe and reproduce at the surface put a rich year-around food resource within reach of a population of brown bears that began to live more and more out on the ice. Natural selection favored those bears best able to catch seals, and they became more thoroughly carnivorous than other bears. By 100,000 years ago they had evolved into something like the polar bear of today. Although polar and brown bears now look and act rather differently, their genetic closeness is demonstrated by matings in zoos that produce fertile offspring. Polar Bears
Leave a comment, make a request, Let this small sampling be a guide to better quality, more plentiful, public domain, royalty free, copyright free, high resolution, images, stock photos, jpeg, jpg, free for commercial use, clip art, clipart, clip-art. more at Public Domain Clip Art and clip art or public domain and Polar Bear ot and Ursus maritimus