here's abc's neal karlinksky. >> reporter: in these first images from the ocean floor, you can clearly see vases, cannons, and what looks like coins. so much gold, colombia's president making a claim as big as the discovery. "it is one of the biggest findings and identification of underwater heritage in the history of humanity," he says. the spanish galleon, the san jose, sank on june 8th, 1708, in the caribbean off the coast of cartagena, colombia. the triple decked ship was 150 feet long and armed with 64 guns. estimates of the treasure on board, believed to include emeralds, gold and coins like this one shown on the facebook page for sea search armada, and silver vary widely. from an astonishing $4 billion to as much as $17 billion. "it is a job of many years with many people," says a member of the team. "a huge triumph." dive teams have kept the exact location of the galleon secret, for obvious reasons. it was found in 1,000 feet of water during what was very much a high-tech treasure hunt. what is thought to be one of the world's most valuable ship wrecks is a secret no more. neal