Researchers are also exploring how deep-sea trenches bury carbon and other chemicals in the seafloor.
It turns out that Cameron has a hobby: deep-sea exploration.
Built in 2008, Nereus featured completely new technology to meet the unique challenges of deep-sea exploration.
It joins a list of five deep-sea exploration vehicles that have been lost or near-fatally damaged on the job since 2003.
The BP Gulf oil gusher has shown the whole world the nightmarish risks of deep-sea drilling.
There are two kinds of leads: the hand lead and deep-sea lead.
The same principle is also applied to the deep-sea sounding-lead.
He had struck feet first and suffered no harm, but had gone down like a deep-sea lead.
And aren't there deep-sea fish that lure their victims into their mouths?
For deep-sea or trade-route cruising the smaller craft were of little use.