Scientific literature confirms that global sea levels are rising while coastal and ocean floor elevations change dynamically through tectonic activity, subsidence, and glacial isostatic adjustment.
The claim contains two distinct empirical assertions: that ocean levels are rising and that ocean floor/land elevations change dynamically. Multiple retrieved papers explicitly substantiate both global sea-level rise and vertical land motion / tectonic or subsidence changes affecting coastal and ocean floor elevations. Therefore, the claim is supported by the evidence.