The phrase "watery world" refers to a place or environment that is predominantly made up of water. It suggests that there is a large amount of water or that water plays a significant role in that particular location. Full definition
Each plastic home comes equipped with a solid surface to live on in an otherwise watery world. (sciencenews.org)
Although an unborn baby is safely cushioned in the protective watery world of mom's belly, they can still hear the sounds of the outside world. (babygaga.com)
You might think most life out there would be like what we see on Earth today: grasses, trees and frolicking animals all orbiting yellow stars on watery worlds under blue, oxygen - rich skies. (scientificamerican.com)