It has been hailed as the most valuable shipwreck in the world.
A Spanish galleon, the San José, was sunk by the British off the coast of Colombia more than 300 years ago. It had a cargo of gold, silver and emeralds worth billions of dollars.
But years after it was discovered, a debate still rages over who owns that treasure and what should be done with the wreck.
The Colombian and Spanish states have staked a claim to it, as have a US salvage company and indigenous groups in South America. There have been court battles in Colombia and the US, and the case is now before the Permanent Court of Arbitration at the Hague.
The Colombian government says it wants to raise the remains of the vessel and put it in a museum. Treasure hunters point to the commercial value of the cargo, which could be as much as $18bn (£13.bn).
