After a lot of investigation and textual research, American Navy Colonel Charlie Lisburg believes that since 1500 years, at least 2 100 ships have sunk in the ocean every100 years on average. Over time, the value of gold, silver and jewels buried under the sea floor exceeds 6 trillion US dollars, accounting for 1/8 of the land wealth.
It was found that many of these jewels were left in the sea when the ship carrying the treasure was wrecked or sunk in the war. Although the location of the sunken ship is recorded, there is no more accurate location. Fishing is like looking for a needle in a haystack. Some people think that the cause of the shipwreck is worth studying: some pirates hide a lot of gold and silver gems to the bottom of the sea in order to avoid official pursuit; In order to avoid war and save money, some countries hide a lot of jewels on the seabed. For example, in 1942, when Japan attacked the island of Corregido, south of Manila, Philippines, the US Navy was ordered to bury the local silver worth 7.5 billion dollars in a secret place in the sea.
Finding and opening the secret treasure house of the seabed is an economic activity with small cost and great benefits, which attracts more and more countries to uncover these mysteries.