Triton's Realm is a term used to describe the OCEAN and SEA. It is named after Triton, the Greek god of the SEA, and is often used to refer to the vast expanse of water that covers most of the Earth's surface. The crossword solutions for this term are OCEAN (5 letters) and SEA (3 letters). OCEAN refers to the large body of salt water that covers the majority of the Earth's surface, while SEA is a smaller body of salt water that is partially enclosed by land.