There are indeed some out there. A common theme in these fanfictions could be how their different natures, Spongebob being a sponge and Sandy being a squirrel, add an interesting dynamic to their love story. Their friendship forms the basis, and then the story might show how that friendship blossoms into love.
One idea could be to explore Plankton's backstory. Maybe he wasn't always so obsessed with the Krabby Patty formula. He could have had a normal life before something happened that made him turn to villainy. Another idea is a story where Plankton teams up with other characters from Bikini Bottom in an unlikely alliance. For example, he could work with Sandy to achieve a common goal that has nothing to do with the Krusty Krab.
One significant archaebacterial group from marine plankton is Thaumarchaeota. They play crucial roles in nitrogen cycling and are abundant in various marine environments.
First, think about the aspect of Plankton you want to focus on. Is it his personality, his relationship with other characters, or his goals? Then, come up with a basic plot. For example, if you want to focus on his relationship with Mr. Krabs, you could start with a scenario where they accidentally find themselves in a situation where they have to work together. Next, start writing the opening scene. Describe the setting, like the inside of the Chum Bucket or Bikini Bottom street. Just let your ideas flow and don't worry too much about grammar at first.
The main character of the American animated series," He was a square yellow sponge living in a pineapple on Bikini Beach. He was the senior chef of King Krabby Castle and liked to catch jellyfish. His pet was a small sea snail that could call out "cat ~ cat ~" He was optimistic and naive. He could always cause trouble in a peaceful world, but he could always get out of trouble in the end. His friends included Patrick Star, Brother Octopus, and Sandy. "SpongeBob SquarePants" was one of the most popular TV series in the United States. It was voted the most popular cartoon at the American Children's Choice Awards for seven consecutive years from 2003 to 2009.
No. The original Spongebob series is all about fun, friendship and adventures in Bikini Bottom. The 'Spongebob real story' is a completely different and often very dark and inappropriate take that has nothing to do with the original positive nature of the show.
A new character, like a traveling musician fish. Spongebob is always open to new things and experiences, and a music - loving fish could charm him with her melodies. She could perform at the Krusty Krab and Spongebob would be entranced by her talent.