Sea-Ponies! Twilight is desperately looking for a counter-spell. Spike realizes that his fire breath does not quite work well under water Sea-pony Applejack is kinda disappointed with the lack of apple trees under water. Sea-pony-Luna is bigger than Sea-pony-Celestia on account of the moon being a huge influence on large bodies of water… …and what the others are doing is rather self-explanatory.