Paleoceanography is the study of the history and evolution of Earth's oceans. It involves analyzing geological and biological data from deep-sea sediments, fossils, and other sources to uncover the secrets of our planet's past. Synonyms for paleoceanography include marine paleobiology, marine geology, oceanography, marine ecology, and marine science. These terms all refer to the study of the world's oceans and the organisms that live within them, as well as the geological and environmental factors that have shaped them over time. From the moment life first evolved in the sea to the present day, the oceans have played a vital role in the history of our planet and continue to shape its future.