Real-time measurements provided by seafloor pressure sensors are of great importance because lunar tides, storms, and tsunamis strongly impact pressures at the seafloor and the flow of fluids into and out of the oceanic crust.
In 2014, seafloor pressure sensors were placed at Axial Base (MJ03A), Slope Base, (MJ01A), and the Southern Hydrate Ridge Summit (LJ01B).