Sea turtles make huge journeys across the Pacific, to and from egg-laying sites. Turtles laying eggs in Indonesia paddle (and use currents) all the way to California to forage for jellyfish, and leatherbacks from Costa Rica travel right down to the south Pacific.
Some researchers have been using GPS technology to track migrations to see if their route is the same each year:
There is even an annual event called The Great Turtle Race (this year is the second – The Olympiad!)
And, of course, there is a facebook group devoted to the race.
This is all organised by the leatherback trust.