Figuring out how far sea level rose during past warm periods in Earth's history starts with a walk on the beach, a keen eye for evidence of ancient shorelines, and a highly accurate GPS system. (ldeo.columbia.edu)
As some species live in both oceans, scientists suspect that in past warm periods of the Earth's distant history fish were able to pass between oceans. (carbonbrief.org)
DeConto and Pollard's study was motivated by reconstructions of sea level rise during past warm periods including the previous inter-glacial (around 125,000 years ago) and earlier warm intervals like the Pliocene (around 3 million years ago). (sciencedaily.com)