claim: Our evolving dynamic planet has survived sea level changes of hundreds of metres
evidence: Earth's hydrosphere consists chiefly of the oceans, but technically includes all water surfaces in the world, including inland seas, lakes, rivers, and underground waters down to a depth of 2,000 metres ( 6,600 ft ) The deepest underwater location is Challenger Deep of the Mariana Trench in the Pacific Ocean, having a depth of 10,900 metres ( 6.8 mi ).