Chinese deep-sea research vessel Zhang Jian has found eight craters on the bottom of the South China Sea in a recent exploration in the waters.
The vessel carrying a submersible capable of diving up to 11,000 meters arrived at the waters last Monday and had worked there for days before it returned to a wharf in south China’s Shenzhen for a break on Thursday.
Researchers say the craters on the seabed were formed in the process of gas and liquids emission with the largest having a diameter of more than 1,000 meters.
Craters on seabed have been closely watched and studied since the first discovery in 1960s due to its close relations with greenhouse gas of methane and potential energy of natural gas hydrate.
So according to the researchers, the finding of such craters beneath the South China Sea may indicate the existence of gas hydrate, a renewable clean energy.