The bottoms of the world's oceans and seas are covered with sunken ships, some of which are thousands of years old. It is now estimated that there are around three million shipwrecks out there.

Many of these sunken ships are historically significant and even protected as underwater cultural heritage sites by UNESCO. In particular, UNESCO wants to protect famous lost shipwrecks, including sunken warships that might contain the remains of sailors killed in naval battles. This article will show you some famous shipwrecks of the world.