One common theme is the idea of forbidden love. Mermaids are often from a different world than humans or other sea creatures, and their love across these boundaries is not always accepted. Another theme is sacrifice. Mermaids may have to sacrifice their tails, their voices, or their underwater homes for the sake of love. Also, discovery is a theme. The mermaid or her love interest discovers new things about each other's worlds, whether it's the beauty of the underwater realm for a human or the ways of the human world for a mermaid.
In mermaid love story fanfiction, the theme of identity is quite common. Mermaids may struggle with their identity as a sea creature while falling in love with a human or a different kind of mermaid. The theme of magic also runs through many stories. Magic is often what brings the mermaid and her love together or what they have to overcome. And the theme of longing is there too. Mermaids long for a different life, a life with their love, and this longing drives the story forward.
In these fanfictions, the theme of transformation is quite common. The OC might transform in some way, either in their personality or in their understanding of the world because of their encounter with the mermaid. Another theme is the power of friendship. Alongside the love story, the mermaid and the OC could form strong friendships with other characters in their respective worlds. And a theme of mystery also exists. The mermaid's world is full of secrets, and the OC is constantly trying to understand it, which adds an element of mystery to the overall story.
A frequent theme is the exploration of new powers. As a mermaid, Harry would have different abilities like swimming super - fast or communicating with sea creatures. This often leads to adventures where he uses these powers to solve problems or discover new things. Also, there's the theme of the relationship between the land and the sea. How Harry bridges the gap between the two worlds he now belongs to is an important part of many such fanfictions. He may have to bring the two cultures together to overcome a common enemy or achieve a common goal.
Adventure is a big theme too. Many 'little mermaid fanfiction' stories take the characters on exciting journeys, whether it's exploring uncharted parts of the ocean, or traveling to far - off lands on the surface. These adventures often test the characters' courage and loyalty.
The theme of discovery is also common. The mermaid herself might be discovering new powers or abilities related to her pregnancy. And there could be a discovery by the human world or other sea creatures about the pregnant mermaid. This could lead to all sorts of adventures and interactions, like the mermaid trying to hide her pregnancy or having to face the consequences of it being revealed.
One common theme is transformation. Characters often transform into mermaids or gain mermaid - like abilities, which brings about a whole new set of adventures. Another theme is the discovery of new powers, like the miraculous powers in a mermaid - centered world.
Love and relationships are also prevalent. For example, in 'Bella and the Mermaid Prince', there's a romantic relationship between Bella and a mermaid prince, which adds a lot of drama and emotional depth to the story. And sometimes there are also complex friendships formed within the mermaid community in different fanfictions.
One common theme is the mermaid's struggle between two worlds. For example, their life in the ocean and their newfound connection to the supernatural world on land. This creates a lot of internal conflict for the mermaid characters.
Love is a very common theme. Usually, a mermaid and a human fall in love despite their differences. Another theme is the struggle between two different worlds. The mermaid belongs to the underwater world and the human to the land world, and they have to find a way to be together.
One common theme is sacrifice. The mermaid often has to sacrifice her mermaid life or certain powers to be with the human. Another theme is the idea of two different worlds colliding. Mermaids come from the underwater world which is very different from the human world on land. And of course, there is the theme of true love conquering all, no matter how many difficulties and differences are in the way.
Friendship is a very common theme. Just like in the original My Little Pony and The Little Mermaid stories, the fanfictions often focus on characters from both universes forming strong bonds of friendship. For example, Ariel might make friends with Fluttershy, and they help each other overcome their fears.