Have read the comic “Set Your Sail #1”.
Interesting, but the source of inspiration is taken straight from the Japanese manga “One Piece”, more specifically the Fishman Island Arc with all the ingredients taken from the fabled manga - pirates, ghost ships, an alien world at the bottom of the sea, and sea ponies more like fishmen from One Piece than from MLP. But the background is TYT canon, right up to the TYT special, and Misty had helped with spells taken from books and instructions she found in Crystal Brighthouse, as seen in the last episodes of TYT 2.0. And IDW comics are also included - at least the Nova charm Arc.
It seems that it is much more turbulent on the seabed than on the surface, where tense times are going on, and once again the New Mane 6 discovered that myths and tales from the past hold a kernel of truth. Izzy who had immersed herself in studies about sea ponies had learned how to see through conspicuous things in a manner reminiscent of Detective Pinkie from G4. It didn’t help her, so Zipp has to step in - in the next issue.
The sparking sea is a common term for the world’s oceans, and there are seven kingdoms - one for each sea, so we have seven seas in the world of Equus, which possibly has three continents and a larger island (Isle Scaly). Three locations so far; Seadragon Drift, Sea of Shadows and Luna - the last word is omitted, so it could mean the Luna Ocean on the west coast of Equestria. The sea outside Maretime Bay on the east coast is called the Celestial Sea because the sun rises from the east.
One of the seven monarchs is supposed to be Queen Calla Lily, and she probably ruled in the Celestial Sea, which can be called something else for the sea ponies on the seabed - “Shining Sea”.
And the sea ponies eat meat. Crabs, krill and snails. Probably also fish. Pipp and Izzy had no problem with that.
