Convergent boundaries occur where two tectonic plates move toward each other. This interaction can lead to one plate being forced beneath another in a process called subduction. As the plates collide, they can create mountain ranges, earthquakes, and volcanic activity. There are three main types of convergent boundaries: oceanic-continental, oceanic-oceanic, and continental-continental. Each type results in different geological features. For example, oceanic-continental boundaries often form coastal mountain ranges, while oceanic-oceanic boundaries can create island arcs.