Dozens of perfectly preserved ancient shipwrecks have been found at the bottom of the Black Sea.
A total of 60 wrecks were discovered dating back as far as 2,500 years, including galleys from the Roman, Byzantine and Ottoman empires.
Scientists stumbled upon the graveyard while using underwater robots to survey the effects of climate change along the Bulgarian coast.
Because the Black Sea contains almost no light or oxygen, little life can survive, meaning the wrecks are in excellent condition.
Researchers say their discovery is 'truly unrivalled'. Many of the ships have features that are only known from drawings or written description but never seen until now.
Carvings in the wood of some ships have remained intact for centuries, while well-preserved rope was found aboard one 2,000-year-old Roman vessel.
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