Mermaid Man x Spongebob Fanfic: What are some interesting plot ideas?

A mermaid x human fanfic could start with a human sailor getting lost at sea. A mermaid finds him and guides him to safety. As a result, they develop a relationship. They might face challenges like the mermaid's family not accepting the human or the human having to keep the mermaid a secret from his own kind. Another plot could be a young girl who has always dreamed of mermaids and one day, while swimming, she actually meets one. They become friends and the girl starts to learn about the mermaid's culture and way of life. And yet another idea is a mermaid who is curious about the human world above water and she meets a human who is equally curious about her world. They embark on a journey of discovery together.

Perhaps a time - travel fanfic where Spongebob and Squidward go back in time to the prehistoric era of Bikini Bottom. They have to figure out how to survive among the strange and giant sea creatures there. Spongebob's naivete and Squidward's cautious nature would create a great dynamic as they try to find their way back to their own time. Spongebob might be excited to meet the ancient versions of their friends, while Squidward is just worried about getting eaten.

One plot idea could be that Spongebob and Squidward are human neighbors. Spongebob is always overly cheerful and throws noisy parties, which annoys the grumpy Squidward. But then they end up having to work together on a community project and slowly start to understand each other better.

One idea could be that Spongebob, as a sponge in a human world, tries to adapt to human life to be closer to Sandy. He could go to a human school and struggle with the different subjects, all while having a budding romance with Sandy. Another plot could be that Sandy is working on a big scientific project and Spongebob wants to help her, but his naivete causes some comical mishaps in the lab.

One idea could be a pirate captain who discovers a mermaid in his ship's hold. She was captured by his crew thinking she was a good luck charm. The pirate, against his tough exterior, starts to feel sympathy for her and tries to protect her from his more superstitious and cruel crew members.

Another idea is a story where Sandy wants to introduce some of her land - based inventions to the underwater world. Spongebob helps her with the process, but things go hilariously wrong at first. For example, a machine that is supposed to make the water around Bikini Bottom cleaner ends up making it all muddy. They then have to work together to fix it and learn a valuable lesson about testing things properly before using them in a new environment.

Well, a mermaid fanfic could revolve around a mermaid who is half - human due to some magical experiment. She tries to fit into both the human world and the mermaid world. Also, a story where mermaids are in a war with another underwater species like the selkies. And a mermaid who is an artist and uses the treasures from the ocean floor to create beautiful works of art that she shows to a human she befriends.

One idea could be that Squidward gets turned into a vampire. He then tries to turn Bikini Bottom into a spooky vampire realm, but Spongebob, being his usual positive self, tries to stop him and turn him back to normal with the power of friendship and some kelp - made anti - vampire potions.

One idea could be that Spongebob and Squidward accidentally switch personalities. So Spongebob becomes grumpy and Squidward becomes overly enthusiastic. It would lead to a lot of comical situations in Bikini Bottom.

Their relationship can be developed through shared adventures. For example, if they go on a treasure hunt together. As they search for the treasure, they face various obstacles like tricky puzzles and dangerous sea creatures. Spongebob's naivete and enthusiasm can contrast with Mermaid Man's more experienced and sometimes grumpy nature. This contrast can lead to humorous exchanges but also moments of mutual respect as they rely on each other's strengths to overcome the challenges. Eventually, they become closer friends.