Welcome to the Polymetallic Nodule Research Alliance
Polymetallic Nodule Research Alliance (PNRA) members are engaged in the exploration and research of metal-rich nodules found on the seafloor beneath the ultra-deep ocean
About PNRA
Our members are engaged in the exploration and research of a particular type of deep-sea mineral resource: polymetallic nodules.
Introduction to Deep-Sea Minerals
Deep-sea mineral exploration targets three main types of mineral deposits found on the ocean floor.
Key Topics
A series of articles focused around the impact and effect of polymetallic nodule collection.