Polar bears and melting ice: 3 facts that may surprise you ... Polar bears feed on seals that they hunt on sea ice. While they are excellent swimmers bears can’t navigate the entire arctic in swimming. About 15 percent of the world's oceans are covered by sea ice during part of the year. Rode says that for polar bears, which spend the majority of the year hunting seals and other prey on the ice, shrinking habitats like the Chukchi Sea are already having an effect. This loss of multi-year sea ice is transforming the region and affecting every facet of the polar bear’s life, from hunting seals to raising cubs. If the ice stops melting the bear can hunt, eat, sleep (in dens) and find mate to reproduce. This will probably increase the chances of polar bear’s survival in the Arctic. This time, the video cameras worked. Polar bears could disappear by 2100 due to melting ice, climate change, study says A new study suggests the Arctic species is at risk of being starved into extinction by the end of the century. Declining sea ice is making it harder for the Arctic predators to hunt seals, resulting in rapid weight loss Polar bears (Ursus maritimus) are the poster child for the impacts of climate change on species, and justifiably so.To date, global warming has been most pronounced in the Arctic, and this trend is projected to continue. Polar Bears Film Their Own Sea Ice World by USGS on YouTube. Wild polar bears will become extinct unless we take action to reduce greenhouse gas emissions. They must search for the sea ice or they die either of starvation or drowned. As much attention as the effects of melting sea ice on polar bears has drawn of late, it is important to understand that the thaw will have immediate … There are suggestions that before mid-century we could have a nearly ice … If current ice melting… While sea ice exists primarily in the polar regions, it influences the global climate. Polar bears more vulnerable to starvation due to climate change, according to new study. For the most part, sea ice expands during winter months and melts during summer months, but in certain regions, some sea ice remains year-round. The Department of Interior’s imminent decision on whether to place polar bears on the federally protected endangered species list has focused attention on a recent study that documents for the first time the way that Arctic sea ice affects the bears' survival, breeding, and population growth. Regardless of how many bears may have been around at times past, however, as long as temperatures warm and sea ice habitat continues to decline, polar bears ultimately can only decline. Nowhere is the warming of our planet more apparent than in the Arctic, where the sea ice polar bears depend on is melting.