Over the next eight years, Kaiko continued to explore deep parts of the pacific ocean. Then, in 2003, a terrible thing happened. A dangerous storm was approaching. The scientists who controlled Kaiko hurried to pull the submarine back up to the surface, but they were shocked to fine only an empty cable. Kaiko was not there.
Kaiko's disappearance is still a mystery. What broke its cable? where is it? As late as 2006, a few radio signals from Kaiko reached researchers. This meant it was probably on or near the surface, not on the ocean floor. The pacific, However, is the world's biggest ocean. In an area so large, the tough little explorer may never be found.