The Mean Sea Surface is one of the reference surfaces computed for, and from, altimetry. Including the geoid, it comprises the effect of undersea reliefs on the gravity field

Swot observes ice leads and the SSH in them, thus enabling to retrieve sea ice freeboard

Marine animals such as sea turtles are subject to currents, tidal ones included. Their knowledge can help in protecting those endangered species

Internal tides surface signature can reach several centimeters in some locations. Swot enables to observe them.