The Earth's mighty oceans are even more mysterious than outer space. The majority of the planet's surface is covered by water, but 95% of our oceans remain unexplored. We know more about Mars than we do the deep, dark sea – and with that comes many unsolved and downright baffling puzzles.

From cursed shipwrecks to creepy deep-sea noises, let’s dive into ocean mysteries that even experts can't explain…