On May 8, 2026, satellites detected signs of an unexpected submarine volcanic eruption in the Bismarck Sea near the islands of Papua New Guinea. Over the next several weeks, plumes of steam and ash streamed over the sea, and areas of discolored water surrounded the eruption site. Relatively little is known about the ocean floor in this area or the volcanic feature that is presently erupting. But experts think the new activity, ongoing as of mid-June, might be occurring along the Titan Ridge and has the potential to form an ephemeral new island.