The term 'land in the sea' can be described by two crossword solutions: ISLE and ISLET. An ISLE is a small island, usually located in a body of water such as a lake or sea. An ISLET is an even smaller island, typically just a few meters in diameter. Both isles and islets are formed by the same processes that create land on the mainland, such as sedimentation, erosion, and volcanic activity. They are often home to unique ecosystems and species, making them important habitats for wildlife.