What happens in oceanic oceanic convergent?

In oceanic-oceanic convergent boundaries, two tectonic plates that are both composed of oceanic crust collide. This process typically results in the subduction of one plate beneath the other, forming a deep ocean trench and potentially leading to volcanic island arcs. As the subducting plate descends into the mantle, it melts and can cause volcanic activity, often resulting in the formation of underwater volcanoes or islands. This dynamic interaction can also lead to powerful earthquakes.