|Character played by: Robert Symonds|
|SMDM||The Lost Island|
Walter Jensen is a famous anthropologist and amateur yachtsman.
In 1928, Jensen and his schooner Shara are lost in the Pacific Ocean. Rudy Wells and associates search, to no avail.
Jensen with his boat reaches the shield of the Zanans, during an electrical storm. Somehow the storm neutralizes the shield, and he gets through. He lands on the island, badly injured. He is found by the Zanans, who are afraid to go near him.
Jensen is left for three days and nights. A Zanan lady cannot stand to hear his cries of pain any longer. She goes to him, feeds him, and takes care of him. They are in isolation for one year. Da Nay is later born to the couple, with minimal immunity against infectious diseases on Earth.