What are 12 mysteries of the sea?

Answer 1

1. The Bermuda Triangle's disappearances.
2. The existence of Atlantis.
3. The Marie Celeste ghost ship.
4. The disappearance of the MV Joyita.
5. The origin of the Bloop sound.
6. The underwater crop circles.
7. The disappearance of the USS Cyclops.
8. The legend of ghost ships.
9. Underwater cities like Yonaguni in Japan.
10. Giant sea creatures like the Kraken.
11. The Devil's Sea's mysterious disappearances.
12. The Mary Celeste case.