To Save a (bunch of) Seapony[ies]

    "Who or what is SeaSponge?" Twilight asked Fluttershy, who just looked out at the water. Suddenly, ripples appeared on the surface of the water and the neon yellow Seapony jumped up in the air.

    "Tadaaa!!" He sung, before falling back into the water, splashing everypony.

    "IS THAT A SEAPONY!?" Spike yelled, right into Twilight's ear, "DIDN'T PRINCESS-"

    "Yes Spike! The letter said we were supposed to go into this ocean.....the same one where there were supposed Seaponies." Twilight sighed, "I just didn't think it would be this easy to find one!"

     "Wh-what do you mean?" Fluttershy asked, defensively stepping in front of SeaSponge.

     "Darling, Princess Celestia sent us here to protect a city of Seaponies from poachers." Rarity explained. Fluttershy relaxed as Pinkie ran in front over her,

     "Twilight also needed to find a Seapony so she could turn us into Seaponies!" Pinkie yelled in her face. Fluttershy squeed and screeched,

    "Twilight! Can you really turn me into a Seapony??"

    "Yes Fluttershy, but you have to understand we have a mission here, to protect the city. Not to have fun being a Seapony." Twilight explained.

    "Got it."

SeaSponge looked over at Twilight,

     "That city must be my home, Saddle Bottom!" He said cheerfully, before his face fell in concern, "It's not in danger, is it?"

    "Well, we can't say 'till we try to help, can we?" Applejack said, stepping into the water, "Everypony into the water, and Twilight, do yer magic!"

And with that, Twilight's horn lit up and shot a beam that hit everypony....

   "Wha.....what?" Fluttershy was the last to awaken. She rubbed her eyes in an attempt to clear her blurry vision, only to realize she didn't have hooves anymore! Or at least, not the same ones. "OH MY GOSH! TWILIGHT I'M A.....Wow..." Fluttershy surveyed the rest of the Mane 6, only to find that they too had grown long, scaley tails and fins all over their bodies.

    "Oh! I am absolutely beautiful!" Rarity said as she spun in circles, looking at her new tail.

    "Now girls, remember, we have a mission!" Twilight reminded the awestruck ponies, who were all at the moment admiring their new bodies, especially Spike, who seemed to have turned into more of a Seadragon type of creature.

    "Twilight's right!" SeaSponge exclaimed, "We've got to beat the evil ponies to Saddle Bottom!"

     "Lead the way, Seapony!" yelled Pinkie, swimming over to SeaSponge, who started out into the ocean. The rest of the Mane 6 followed, each having a different level of initial "Swimming as a Seapony" skill.

     After a few hours, the ponies finally made it to a small island. It was mostly covered with bushes, with two palm trees sticking out of the middle. On the beach, however, was a huge boat and a few Pegasi who were grabbing a huge net and preparing to put it in the water.

    "Get down!" SeaSponge hissed, diving underwater. The Mane 6 followed, except for Twilight, who was trying to teleport the net away, but failing to do so.

    "Argg......How come this isn't working?" Twilight grumbled to herself as she kept up the attempts. Eventually, Spike realized she wasn't with them, so he swam back up and yanked Twilight under the water.

    "Twilight, don't you remember how the Princess's letter said that these ponies had the highest technology?" Spike asked. When Twilight nodded, he continued, "I think they used it to enchant those nets so they can't be affected by magic!"

     "That's only going to make this mission so much harder...." Twilight sighed as she swam deeper and deeper, only barely able to see the others, due to the fact that she was so far behind, "HEY!! How can we talk underwater??" Twilight looked at Spike, who only shrugged (as best as he could with the new bone structure in his arms)  Noticing she still had her saddlebags on, Twilight used her magic to open it up and grab the waterproof paper and quill and she started to jot stuff down.

    "HERE WE ARE!!"