A "once-in-a-generation" expedition is underway to survey two legendary shipwrecks in the North Atlantic, the Royal Canadian Geographical Society announced.
Researchers will use human-occupied and remotely operated vehicles to create high-definition "digital twins" of the vessels, which belonged to iconic polar explorers.
The first wreck is the Quest, the ship on which Sir Ernest Shackleton died in 1922. The second is the Terra Nova, which carried Robert Falcon Scott on his ill-fated 1912 Antarctic expedition.
The Quest sank off Newfoundland while serving as a sealing vessel; the Terra Nova went down near Greenland in 1943. Both were discovered in the last two decades.
"The bravery and leadership demonstrated by these two polar heroes have inspired generations," said co-chief scientist David Mearns, a leading shipwreck expert. The international team aims to document the ships to inspire future explorers.