Polar Bears Extinction

Polar bears numbers are in decline, and the species is danger of extinction due to the effects of global climate change. Because polar bears are not skilled at catching prey in open water, despite being excellent swimmers, they are entirely dependent on sea ice for hunting. Seals, the primary component of the polar bear diet, also depend on the sea ice ecosystem. Vanishing sea ice forces seals to move in search of nourishment and the icy locations necessary for breeding. Sea ice reduction due to global warming is a grave threat to polar bears, forcing them to travel farther to locate suitable habitats and food.

Threats to Polar Bear Habitat

A melting habitat also threatens polar bear reproduction. Pregnant females need deep, soft snow to build dens that protect their cubs from harsh weather. Polar bear mothers also must be able to build sufficient fat reserves to survive months in the den after giving birth. Worsening conditions may lead to less breeding among polar bears and fewer surviving cubs.
Polar bears are sensitive indicators of environmental health, playing an important role in monitoring the ecosystem. Despite their declining numbers, these stunning denizens of the North remain important icons in northern indigenous cultures, broader popular culture and literature.