Where To Stream Star Trek The Animated Series Season 1 Episode 13

While exploring the aquatic planet Argo, Kirk and Spock are lost at sea. They are later found... but have been transformed into water breathers. Now they must track down the planet's mysterious undersea inhabitants and find a cure, or be left to live as freaks in the Federation. The venom of a deadly sea snake is the only antidote to return them to their normal selves.