Marine geophysics is the study of the physical properties and processes of the ocean floor and the underlying geological structures. This field uses various techniques, such as seismic surveys and magnetic measurements, to understand the composition and behavior of the Earth's crust beneath the ocean. Researchers in marine geophysics aim to uncover information about tectonic plate movements, underwater volcanoes, and oceanic features like mid-ocean ridges. Their work is essential for understanding natural phenomena, such as earthquakes and tsunamis, and for exploring resources like oil and natural gas found beneath the seabed.