Percabeth Honeymoon: The Sea Battle

Percy's POV:

I couldn't sleep, i tried to, but i couldn't. I laid on my bed until dawn. It's 5am now. Amphitrite told me to meet her underwater around dawn, so i decided to get up. Annabeth was sleeping on the other side, i hope i won't startle her. I head to the beach.
The sky is still dark, I could see the stars shining brightly in the dark sky, it's so beautiful. I could feel the breeze hitting my face gently. I walked into the water slowly. After a few seconds, I was completely underwater. I swam deeper, hope to see Amphitrite or maybe some signs of her kingdom. However, i see nothing but darkness. I called out her name, hoping she could hear me. I waited, but no one said back to me. I kept diving, deeper and deeper. Not far away, i saw a girl with sea shells and a long blue dress. It was her, looking gorgeous underwater. "I thought you're not gonna come," Amphitrite smiles at me. "Where's your kingdom?" I asked. "Follow me, Perseus."
I followed her into the sea, deeper and deeper. Later, i saw something shining brightly in the sea. When we got closer, i could see golden castles. It must be Amphitrite's kingdom. The castles are decorated with sea shells and sea weed. "Welcome to my kingdom, you're the first demigod visiting my kingdom."
"Why? Are demigods kinda forbidden to be here?"
"Long story." She smiled. I smiled back.
She brought me to her castle, there are mermaids and mermen every where. Everyone said Hi to me enthusiastically. Everyone was so nice, the kingdom is so beautiful, I could stay here forever.
"You're welcome to stay here as long as you want," She said, as if she could actually read my mind.
"So how can i help the kingdom?"
"Let's discuss about that in our conference room." She gestured me into a room which i assume is the conference room.
I sat down on a seashell chair as Amphitrite sat on hers.
"There's only one way to stop Ursula, the sea witch from conquering my kingdom. We have to destroy her." She narrowed her eyes and went on, "The only way to destroy her, is to kill her with a spear that is dipped in the blood of the son or daughter of Poseidon."
"That easy?" I asked.
"Yes, my child." Her sea blue eyes staring at me.

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