Want to check out an active mid-ocean ridge? The University of Washington has a series of geophysical monitoring stations on the Juan de Fuca ridge off the Pacific Northwest US Coastline. In 2015 they were able to track a series of eruptions due to the presence of earthquakes and other seismic signals. Here you can travel along the ocean floor as they pick up the equipment on that ridge - lots of pillow basalts erupted underwater and a bunch of organisms living off the energy supplied by these eruptions.
What do you think about the controversy regarding the origin of intraplate volcanism (i.e.: whether it is caused by deep mantle effects such as plumes or through shallow mantle effects such as the plate model, as proposed by Gillian Foulger, Don Anderson and others)