Seafloor amber may hold hints of a tsunami 115 million years ago
Formations in the tree resin point to massive waves that sucked a forest into the sea

A layer of amber tops a piece of sandstone. These sediments, unearthed from a quarry in Japan, were once on the deep seafloor. Formations in the golden resin hint at ancient tsunamis.
A. Kubota et al./Scientific Reports 2025