Seafloor megablocks reveal half of Anak Krakatau island collapsed into the sea, causing the 2018 Sunda Strait tsunami, Indonesia

3D render of bathymetry of the Anak Krakatau megablocks facing NE at the landslide

For the first time, scientists have been able to study the deposits of a volcanic island landslide-tsunami immediately after the incident with the benefit of modern acoustic equipment.