Unlike in the Pacific South Seas, there are no floating pumice carpets or pronounced manifestations of volcanism on the water surface off the island of Mayotte in the Indian Ocean. On the other hand, the ongoing earthquake activity indicates that the probably largest submarine volcanic eruption of modern times is continuing. Yesterday there was an earthquake of magnitude 3.1 at a depth of 32 km. The quake is part of a swarm quake that has lasted since last May and is associated with magma ascent.