Rita's POV
Yes. This is the time I tell the secret to them. Ever since the girls came along, I was always reminded by looking at Sirena's face of my old friend, Marina. Yes, Marina is Sirena and Aquata's mother. She was kidnaped by a pod of rogue mermen when we were just as little as a minnow.
~flashback~
"Rita! Come on, let's play here!" Marina giggled as she dove back in the water
"Umm Marina, I don't think it's safe out here"
"Ughh Rita don't be a guppy, there's nothing out here" Marina resurfaced as she assured me
"Hey, Councilwoman Aquamarine had claimed to see a merman passing by here! We shouldn't be here" I reminded her
"Ughh suite yourself, I'm going" Marina dove back in
~end of flashback~
I dived in and turned around. But then I saw Marina being grabbed by a large merman and his pod as she screamed bubbles underwater. They swim as fast as they could as they hold her captive. I can't believe I just float there doing nothing while I saw my friend being taken away by mermen. I'm filled with regrets from that day on.
10 years had passed. I've finished my mermaid studies and got my moon ring. But then one day, I saw Marina swimming towards me. She is accompanied with a small young mermaid who held her hand, who is about 6 years old, and in fact, she was expecting another one as her belly is very large.
~flashback~
"Hello old friend" Marina greeted me
"I thought I never see you again" I hugged her. I looked at the young mermaid "What's your name?"
"Aquata" The young mermaid speaks softly
"I escaped the mermen after all this years. One merman had me and sired these children with me"
I nodded. "Well you are safe now. I told you not to go out to the open sea without the elders ten years ago!"
Marina looked away. She has regrets on her eyes. "I'm sorry" I apologized for reminding her mistake
"It's alright"
~end of flashback~
After that, I was banished from the pod for getting legs and for falling in love with a land boy. Unfortunately, he died. I forged a life ever since, becoming a principal of a school, and I sensed that one of my students has got something strange in him. I approached him and asked his name
~flashback~
"Hello, welcome to Suncoast High! What's your name?"
"Zac, Zac Blakely"
"Well Zac, I hope you will do well in school"
I touched his shoulder and I suddenly had visions
~Rita's vision~
The merman who had Marina captive and sired children with her, came to land. There, he made contact with a land girl, and left her alone, pregnant. She gave birth to a baby boy, and gave it up for adoption, and the baby was adopted by the Blakelys"
~end of vision~
"Are you okay? Ms?" The boy looked at me
"Yes I'm fine"
Zac Blakely is part merman, part mortal. I knew it, there was something strange on him. After then I continued to watch over him from a distance, to make sure anything doesn't happen to him. I also noticed that when he touched water, nothing happened. That was until three adolescent mermaids came to my school and did something to the school fountain.
I brought the girls to my office, I saw one of them had a moon ring. I take it, not knowing that they are mermaids, and went home to go for a swim. After I get back, I saw the girls on my grotto, seeing me in my tail. They told me that Zac fell to the moon pool on Mako Island. I was devastated. I already promised myself not to let anything happen to Zac. Now he became a threat to the Mako Pod and I can't just say that this was all the girls' fault. After the conversation, I noticed Sirena, who looks exactly like Marina.
They all left. I realized that Sirena was Marina's daughter when she later mentioned that she had a sister, named Aquata. No wonder why Sirena extremely resembles Marina.
~end of flashback~
It's time that I tell them that Sirena and Zac are half siblings.
"Girls, Zac, I like to talk to you about something. I wanted to tell you about this earlier, but I didn't think that all of you are ready for this"
"Sirena, I know you are the daughter of Marina, so as Aquata"
"How did you know?"
"Sirena, you are the only mermaid, other than Aquata, to be born organically, unlike others who are born out of sea foam, which explains that you and Aquata are the only set of siblings on the Mako pod"
After a silence, I told them the real truth
"Zac, you are half siblings with Aquata and Sirena"
"WHAT?!" Lyla, Nixie, Sirena and Zac all were surprised
"How is that possible? I have my parents!"
"I don't want to blow this up, but you are adopted, you are the son of a merman, and Sirena, you are the daughter of the same merman that fathered Zac, so as Aquata"
"What?" Sirena gasped
"Your real mother Zac, she was just a teenage land girl when she gave birth to you, I saw it all when I touched your shoulder when you first came to Suncoast High"
After a silence, I take a deep breath and explain again
"When you fell to the moon pool, Zac, how did it happen?" I asked
"I was drawn by the moon light. It led me to the trident cave, where I touched the symbol and suddenly I fell and I woke up the next morning on the beach" Zac explained
"Zac, I don't think you falling to the moon pool is a coincidence. You are part merman, the Moon wants to complete you by fully transforming you in the moon pool" I theorized.
Zac's POV
I can't believe it. Rita never told me about this. My parents never told me I was adopted. I can't just ask them about it. They'll have a lot of questions, of how I know about me being adopted. I can't just tell Rita is the one who told me. It'll cause more questions to appear in their heads. Like how Rita knew about it. I can't just tell them that I'm a merman and Rita is a mermaid with vision powers. I decided to just act normal around them like nothing had happened.
After this news, I somehow felt a familial connection with Sirena. I started to become more protective around her. I never grew up with a sister, but I think this is a normal brotherly thing.
Sirena's POV
After this night, I almost can't sleep, thinking about Aquata, and Zac. I want to learn more about my heritage and family, I would love to meet my father, if he is a nice merman that won't attack me. Lyla, Nixie and I swam back to the moon pool where we could rest.
"If Zac is your brother, is he older or younger?" Nixie asked
"Doesn't really matter"
"He definitely is older, Sirena, what's your age now?" Lyla asked
"15"
"Zac is 16, so he is older than you" Lyla added
"If Zac is 16, then he is younger than Aquata but older than me, Aquata is 21, so it's obvious"
"Let's just go to sleep, I'm so exhausted" Nixie yawned as she laid her head on the rocks. I sang a lullaby, like Aquata used to do to me before bed time, then Lyla and Nixie started to fell asleep. Gosh Nixie snores really bad. It's all left to me. I still can't stop thinking about my father, and Zac.