A physical description of Mercury is a silvery,metalic,thick, fluid.

A silvery metalic thick fluid.

Thick description is a term coined by anthropologist Clifford Geertz to describe the practice of providing detailed, context-rich interpretations of human behavior within a particular cultural setting. It involves analyzing not just the actions themselves, but also the cultural meanings, symbols, and social structures that shape them. Ultimately, thick description seeks to uncover the deeper layers of significance underlying observed behaviors.

In the Arctic or Antarctic, probably on land. Polar bears and musk ox fit that description. Most marine mammals (in cold climates) have a thick layer of fat, but lack a thick layer of fur. However, the nine species of fur seals have thick fur.

It's just a description - it's a syrup (a thick, sweet liquid) made from the sap of maple trees.