Oceans
From Urantia Wiki, the encyclopedia of The Urantia Book
Throughout this epoch, the oceans became too salty, causing minimal life to survive in the excessively salty seas. 59:3.10
The ocean bottoms sank under the weight of accumulating meteors from the Pacific Ocean, causing the continental land masses to rise. 57:8.20-21
During the Pleistocene, ocean currents shifted and climate changed, leading to the formation of glaciers and the shaping of our planet's landscape for the last 15 million years. 61:3.9 61:5.2
There are no great oceans on Jerusem or Edentia, only sparkling lakes and interconnecting streams. 43:1.1 46:2.2
Not all inhabited planets have atmospheric oceans suited to respiratory exchange of gases, such as present on Urantia. 49:2.24
Originally fresh, the ocean attained requisite saltiness over time. (57:8.3,25)
North America's protection by oceans facilitated its peaceful and continuous development. 81:6.5
The ideal conditions for life implantation on a planet with marine origins are provided by shallow inland seas where sunlight can penetrate more than 600 feet. 58:1.7
The weight of the oceans, in relation to land elevations, plays a crucial role in maintaining the balance between continents and sea bottoms. 58:5.5-8
One billion years ago, a world-wide ocean covered the entire planet of Urantia, not yet salty but a fresh-water covering for the world. 57:8