What do polar bears use to grip onto the ice?

Polar bears don't use anything to grip onto the ice. Instead, they have special features on their paws that help them maintain traction on slippery surfaces:

* Rough pads: Their paws have rough pads that provide friction and help them grip onto ice and snow.

* Non-retractable claws: These long, sharp claws act like tiny grappling hooks, digging into the ice and providing even more grip.

* Wide paws: Their wide paws distribute their weight evenly, preventing them from sinking into the snow.

These features are essential for polar bears to survive in their icy environment. They allow them to hunt seals on the ice, navigate treacherous terrain, and even walk on thin ice without falling through.