Star Trek: The Animated Series

This is the further adventures of the Star Trek series in a half-hour animated form. This show basically continues the adventures of the original series (presumably in the fourth year of the five-year mission), but takes advantage of the unlimited special effects provided by animation to introduce more alien crewmen (the felinoid M'Ress and the tripedal Arex) as well as introduce more elaborate adventures like an underwater adventure, the miniaturisation of the crew to 1 cm., and the appearance of a giant fire-breathing two-headed dragon.