My Merman Husband 3

A merfolk prince and the fisherwoman he loves live quietly in a coastal village until chemical waste poisons the sea and the village's catch. They trace the dumping to a factory owner and gather the evidence to bring him down, but the seabed is already dying. When she awakens an ancient sea-grass seed, they build an underwater farm and help the villagers protect the coast. Can their fragile new venture survive sabotage and the exposure of his true identity?