Yes, it's definitely worth watching. It offers an interesting take on the Superman story. The animation is great for its time and the characters are well - developed. You get to see Superman in a different kind of adventure in this episode, which makes it engaging.
Well, it often has amazing art. The illustrations can bring Superman's world to life vividly. It might also have great storylines that are either based on the animated series or offer new takes on the Superman mythos.
I'm not entirely sure as I haven't watched this specific episode in detail. But generally, in Superman stories, it could be about Superman facing some sort of challenge related to a fish or something in the underwater world.
Obviously, Superman is one of the main characters. There might also be some characters from his supporting cast like Lois Lane or Jimmy Olsen who could be involved in the story.
One interesting fanfiction could be about Superman facing a new type of kryptonite - one that affects his mental abilities rather than his physical ones. This would add a new layer of challenge to his character.
You might be able to find it on some streaming platforms. For example, DC Universe used to have a lot of DC - related animated shows, but it has changed over time. You could also check on Amazon Prime Video or Hulu as they sometimes have older animated series available for streaming.
Obviously, Superman himself is a very popular character. He is the center of the series and in fanfictions, his different powers and how he uses them in new situations are often explored.
One animated superman story is about Superman facing a powerful alien invasion. The aliens were able to disrupt all of Earth's technology. Superman had to use his super strength, flight, and heat vision in creative ways. He first located the source of the disruption in space. Then, he flew there at top speed, enduring attacks from the alien ships along the way. Once he reached the main ship, he used his heat vision to disable their main power source, saving Earth.
Another theme is the struggle between good and evil. Superman represents all that is good, while villains like Lex Luthor represent the forces of evil. Their constant battles highlight this fundamental struggle.