What remains of the Endurance is 3,000m down in waters that are pretty much permanently covered in thick sea-ice, the same sea-ice that trapped and then ruptured the hull of Shackleton's polar yacht.

Every year, many marine animals migrate between foraging areas and breeding sites, often managing their movements with precision.

For pregnant female elephant seals, they travel more than 10,000 kilometres across the Eastern North Pacific Ocean annually, before returning to their breeding beaches where they will give birth within five days of their arrival.

How do they achieve such precise timing, without any GPS or navigation software?

The Great Lakes Shipwreck Historical Society (GLSHS) announced that the wreck of the Atlanta, a three-masted schooner-barge, was located by sonar in the summer of 2021  but the discovery wasn't made public until research had been conducted to give the wreck context, according to Corey Adkins, the communications and content director of GLSHS.