Question

x) What is fiery ice? What is the reason behind such nomenclature?​

Answer 1

This is methane hydrate, also known as "fiery ice." It's a natural gas trapped in ice crystals buried in the ocean floors. And researchers say there's enough reserve of methane hydrate that could last for thousands of years. But extracting it out is extremely hard.

Methane hydrate's exotic nickname is a reference to the compound's chemical structure: molecules of methane gas trapped within a cage of solid water molecules. ... They realized that gas was mixing with water and forming large chunks of methane hydrate, which caused blockages.

Hope my answer helps you :))