Polar Bear Evolution Is a Continuing Story

Polar bears eat dolphins and walrus (Field Guide 2002). Sometimes they even eat eggs, crabs, kelp (Milius 1994). Polar bears are strong enough to lift Beluga from the weight of the water several times (Drew, 1996). However, with a typical meal, polar bears capture seals by tracking or ambushing animals. When polar bears see or smell a seal, it usually tracks seals slowly. As it approaches the animal, the polar bear starts chasing at high speed.

Let's talk about polar bears. The health and quantity of 19 Polar bear populations in the Arctic Circle are very good, over decades *. Mitch Taylor who has studied polar bears for more than 30 years says that the population has increased and it is very resilient. Every year at least 600 Polar bears are shot, killed and killed by hunters - Does your favorite news source teach you this? The Arctic Ocean ice grows and shrinks every 6 months and is about the same size as the mainland of the United States. As the Earth warms, the overall trend of ice continues to decline every year; all animals living there have dealt with this fluctuation for millions of years. International catch and seal hunting quota are related to the number of polar bears rather than the temperature

Thousands of years of evolution have led the Arctic seeds, such as polar bears, walruses, silkworms and the like, on and around the sea ice. Due to climate change, the ice sheet changes rapidly in terms of range and thickness, and the adaptation rate of these species is rapidly shrinking too rapidly. The blue whale 's lifetime is related to sea ice whether it is a place to feed or a place to evacuate. Beluga moving slowly depends on sea ice as a place to escape carnivores like killer whales. A ship that supports oil and gas development means an increase in traffic volume in sensitive areas. An increase in transport means that more noise can mask the transmission of many Arctic marine species and potentially increase the possibility of collision with marine mammals, especially whales. It also brings more pollution and increases the possibility of leaking oil and fuel.

Polar bear. The story of the big predator is well known: the ice of the Arctic Ocean hunted by the animal slowly disappeared during the summer. Sea ice was formed in the second half of autumn and disappeared at the beginning of spring. "Polar bears must use other food sources, such as land," and "With the retreat of the ice in the Arctic Ocean," the hungry polar bear became a goose egg. But that is not the best option, Steven Amstrup, chief scientist at Polar Bear International, said in a previous report. "There is a media coverage suggesting that this may mean that polar bears may land and eat onshore food. Anyway, without sea ice, it can work." There is absolutely no evidence that they have the ability to do this. "(Read the" About Thin Ice "from National Geographic magazine).