When was sea level highest?

The sea level that skirts our coasts is a silent testimony to the geological and climatic upheavals that have shaped our planet throughout the ages. As current climate change accelerates ice melt and sea level rise, the question remains: were seas ever higher in the past, and if so, when?

Cretaceous record

In the unfathomable depths of our planet's geological history, sea levels have fluctuated dramatically, testifying to the titanic forces that have tossed our world throughout the ages. A study published in 2022 in the journal Gondwana Research sheds light on one of these remarkable moments: about before 117 million years , during the Cretaceous Aptian period, the seas reached enormous heights that far exceeded present levels almost 200 meters . (Brice Louvet, more on sciencepost.fr)