Humans have managed to explore Mars, comets and even farthest galaxies in space. However, we still only have a clue what’s hiding deep underwater, beneath our planet’s oceans. Here is the list of the most amazing underwater discoveries by now.
1. Alien-spaceship-like object
2. Underwater Stonehenge
3. Ancient Egyptian underwater city
4. The world’s oldest computer mechanism – Antykethera
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