Matsya 6000
Matsya 6000 (Devanagari: मत्स्य ६०००) (Sanskrit, transl. "Fish 6000") is an Indian crewed deep-submergence vehicle intended to be utilised for deep-sea exploration of rare minerals under the Samudrayaan mission. Currently under development, the vehicle would consist of a titanium alloy sphere of 80mm thickness along with a diameter of 2.1m which can withstand the pressure of 600 bar.