In Hindu mythology, Vaivasvata Manu (also Manu Vaivasvate) is one of the 14 Manus. He is considered the progenitor of the current Manvantara , which is the 7th of the 14 that make up the current Kalpa, each Kalpa making of a day of Brahma.
He was born to Saranya and Vivasvat. Vaivasvata Manu once caught a talking fish who begged him to rescue it. The fish claimed a Great Flood was coming and it would wash away all living things. Manu put the fish in a pot, and then, as it grew larger, into a tank, a lake and then the ocean. While in the ocean, the fish told Manu to build a boat. He did so and when the flood arrived, the fish (actually Matsya) towed the ship by a cable to attached to his horn.
See also: Manusmriti