As the sea women snorkel the Northwest Passage, they’ll follow in the esteemed steps of Viking, European, American and Canadian explorers. Using state-of-the imaging technology to map the sea floor, Team Sedna may discover long-lost wooden ships that have been preserved in oxygen-poor arctic waters—perhaps a Viking merchant ship? Or Captain Sir John Franklin’s ships, the HMS Erebus and the HMS Terror? Franklin’s 1845 traverse of the Northwest Passage ended badly; his two ships were beset by ice and later sank. Franklin and his 128 men perished.