Why did NASA stop exploring the ocean? It is said that we have only explored 5% of our oceans to date. This makes it clear that there are still many things to be discovered. Legends like the megalodon and the kraken may not just be myths. In 1958, NASA started exploring the ocean. Here they began to map the sea floor, but something strange happened. The program was abruptly cancelled in 1978. NASA’s main focus was now to get us off the planet. This makes us think about what really lives in the depths of the sea, and what it was that NASA discovered in the deep ocean.