What Happens At The Ending Of A Song Below Water?

Selene Wyndham falls in love with the merman, Zirion, at first sight. Despite the gossip and criticism, she rescues him from the beast pit. Although he's indifferent toward her, she never complains. She merely wishes that he never again suffers pain and hardship. She even vows to protect him for a lifetime. This goes on until the day he personally sends her into the beast pit, where she's torn apart and killed by a savage beast. Only then does Selene realize that from the very beginning, everything has been an elaborate scheme set by her younger sister, Vanessa Wyndham, to become the head of the family. And Zirion was Vanessa's very first pawn to set her plan in motion. "How does it feel to be sent into the beast pit by the very man you love, Selene?" As a set of sharp teeth pierce through her body, Selene's consciousness fades away. When she opens her eyes again, she has returned to the moment when she rescues Zirion from the beast pit. This time, Selene drives Zirion away and saves a young wolfman instead. She then makes him her personal guard. One day, the rain is pouring heavily when the once lofty and proud Zirion kneels at Selene's feet, ignoring the mud and filth on him. He digs out a scale from his body and begs in a sorrowful voice for her to spare him another glance.

She was lost, nowhere to be found. So, he began to find her. Little did he know she was just there all along hiding beneath the sea.(This story involves Philippine Mythology, but I altered some things for the plot to work out, thanks!)

Ashlyn hasn't spoken a word since the age of eight, and her heart's never felt more protected. But, when the confident and ever so charming Derek stumbles into her quiet little world, her emotions-and forbidden desires-have never been so loud. For twenty years, silence is all Ashlyn Holland has known. Haunted by the memories of her father, and the harrowing song of the ocean that stole him from her, Ashlyn maintains a safe distance from the rest of the world. Treading carefully the sea of fear and anguish that surrounds her, Ashlyn is determined to do all she can to protect her heart from such a tragic loss striking again. In silence, she grieves. In silence, she is safe. In silence, she finds the strength to breathe. But the silence can only last so long... Derek Moreno is charming and devoted, and quick to see through every wall Ashlyn erects. With his arrival in town, defences fold and walls begin to crumble, the songs of her heart reaching new heights. Together, they crest twin tides of fate, the silence she'd once sought engulfed by his gentle touch, and the whispers of a love thought impossible. For the summer, Ashlyn welcomes the noise. The disruption. But, the ghosts of Derek's past will no longer remain silent, and their deafening power has the potential to drag them both into a current strong enough to drown them amidst their heartache.

After the cruise ship strikes a hidden reef, panicked passengers shove me and Kristen Langford into the sea. My boyfriend, Elijah Jensen, is the ship's captain, so he plunges into the water. But instead of saving me, he grabs Kristen and boards the last lifeboat. I thrash and cry for help, but he slaps my hand away. "You can swim. Stop pretending for attention!" Elijah snaps. "Kristen's body temperature is dropping. I have to get her to a hospital!" The waters around me are pitch-black, and his words feel like a death sentence. When the tracking bracelet I always wear is discovered inside a shark, Elijah dives alone into shark-infested waters, searching for three days and nights. In the end, the brilliant captain who once ruled the oceans can never sail again.

Fairytales don’t always come from the earth... until her. 
 Mermaid legends are human fables, but beneath the waves, war is looming. A missing daughter is the only hope for a dying species. 
 Rescued during a typhoon, Galene finds herself in a new world amongst a dangerous species—humans. With no memories of her watery pasts, she doesn’t see the predators closing in until it’s too late.
 Stralath is a shape-shifting bounty hunter dedicated to keeping the peace in a violent universe. His earthly mission? To find the elusive mermaid who he’ll dangle in front of a dangerous oceanic pod.  Except Galene is not what he expected—she’s an innocent caught in a dangerous game of extinction. An angel who paints with color and smiles at the world.  She is easy prey, and Stralath abandons his mission, unleashing his brutal self to guard her heart and life. 

My sister has awakened her mermaid bloodline, but it is incomplete. Her skin is her curse. A single touch, too hard, and it cracks. For her, everything hard in our house has been thrown away. I love to dance, but the hard tips of ballet shoes are forbidden. I love music, but the strings of a guitar or the keys of a piano are too dangerous. Every dream I've ever had has been strangled in its cradle because of my sister's condition. My brother, Liam, who raised us both, always looks at me with tired, pleading eyes. "Elara is fragile, Isla. You have to be understanding." But I was only eighteen the first time I truly understood. I came home from my high school graduation ceremony, the scent of sunshine and excitement still on my clothes. The moment I stepped inside, Elara's hand connected with my cheek. Hard. For no reason at all. Everyone rushed to her. Liam pointed a furious finger at me. "Look what you've done! You've hurt her hand! How could you be so careless?" He shoved me aside and rushed out with Elara to find a doctor. I fell back against the glass coffee table, the impact jarring. And then, a strange, cold pain bloomed across my back. I felt my skin... tear. It was then I remembered the doctor's words from my last check-up: "You carry the Siren's Gene, Isla. It could manifest at any time." As my vision blurred, my own blood pooling on the pristine white floor, I finally understood. The curse wasn't just my sister's. It was mine, too.