Union minister Kiren Rijiju on Monday shared a video and photos of Matsya (Hindi for Fish) 6000, a manned submersible that will explore the depths of the ocean as part of the Samudrayaan mission. The vessel is being developed by the National Institute of Ocean Technology (NIOT), Chennai. Once commissioned, this will be India's first manned ocean exploration mission. The spherical vessel will be built to take aquanauts to 6,000 metres deep into the sea. However, the inaugural underwater journey will be of 500 metres. Mr Rijiju said the mission will not disturb the marine ecosystem.