Episode:113
The Ambergris Element

Jack's Rating:

While exploring the water planet Argo, Captain Kirk and Mr. Spock are transformed into water breathers by the planet's undersea inhabitants, the Aquans. In order to return to their normal selves, they must enlist the help of the Aquans to capture a giant sur-snake, whose venom holds the antidote.

Features:
Stardate: 5499.9
Air Date: 12/01/73
Director: Hal Sutherland