H2O Just Add Water: Emma's Return

Waters of Mako

The trio rode the boat all the way to Mako Island, huddled together. Lewis was using an aquascope to see when they'd be above the sunken ship.
"Are we there yet Lewis or was this an elaborate plan to murder us?" Rikki asked in her trademark sardonic tone.
"Almost... there! Here we are ladies" Lewis announced proudly.
"Perfect let's go!" Cleo said with excitement.
"Girls wait! This is a shark infested area."
"A shark invested area?!" Rikki couldn't believe it. Lewis was a tad confused considering he had just let the girls know about the sharks. Then he remembered this was Rikki he was talking to. "No way, I'm not risking my tail for this" Rikki said outraged.
"Don't worry Rikki, just put this in your ear" Lewis pulled out two small devices. "I'll keep you girls updated" Lewis promised.
"Rikki come on. This is for our friends. Can't you please put your pride aside?" Cleo begged.
"No, I'm not doing this cause Emma's being stubborn... as usual"
"Well then do it for me Rikki. I want all of us to be friends more than anything" Cleo looked at Rikki with puppy dog eyes.
Rikki sat there, cross armed for a good 30 seconds before finally budging.
"Fine" Immediately she grabbed the small device Lewis had. "But if we get devoured by a shark tell Emma it's all her fault. And if it's only me, then Cleo will have to live with that for the rest of her life"
Cleo smiled as she put the device in her ear.
"Careful girls" Lewis warned.
"Thanks Lewis" Cleo smiled.

Immediately, the two girls dove into the water, disappearing into it. Within 10 seconds, their legs were replaced by their orange mermaid tails as they dove deeper into the water to find the shipwreck.
"Alright so far so good, no sharks in sight" Lewis told the girls, watching from the aquascope.
As the girls went deeper, they found the wreck. It was quite bigger than what they imagined but they knew it would be easy to find what they were looking for.
The girls entered the ship, looking through it before entering into a room through a door. Cleo felt quite claustrophobic as they were essentially trapped. Suddenly Rikki spotted something shiny at the other end of the room. She quickly swam towards it and found herself surrounded with metal necklaces and plenty of jewelry. Cleo swam towards it as well, admiring the beauty of everything. Cleo had a bag with her, the two girls quickly stuffed handfuls of jewelry into the bag. Satisfied with their collection, the girls swam back to the door but when they tried to open it, it wouldn't budge. The door had automatically locked. They were trapped. Since the girls couldn't talk underwater, they couldn't tell Lewis of their situation. It suddenly occurred to Cleo that they hadn't thought the situation entirely through. Rikki gave her an "I told you so" look as sharks began surrounding the wreck.

Around 10 minutes later, Lewis suddenly realized they had been down there for a while. He quickly began to get in contact with the two.
"Girls! Girls! C-can- hear...?" The devices began glitching and running out of power for the two girls. They suddenly became scared as they realized they were trapped down there with essentially no help. Not to mention that eventually, the humans would go back in scuba gear to rescue the content of the ship, meaning if they stayed there, (assuming they wouldn't be devoured by sharks) their secret would be discovered.

"Oh this is bad really bad" Lewis told himself. Suddenly, he remembered. "Emma and Bella! They can go down there and rescue them." "Girls stay where you are. I'm gonna get help."
Immediately Lewis took off to find the two as Rikki and Cleo stayed down in the shark surrounded wreck.