Aether Currents are an extremely useful resource while playing Final Fantasy XIV. They allow you to unlock flying mounts for anyone you ride on your character, and there are several that you can find while exploring the Kozama'uka region for the Dawntrail expansion.
Final Fantasy 14 Dawntrail – Kozama'uka Aether Currents
The Kozama’uka area isn’t the first region you’ll visit. But it is one of the first locations you’ll be able to fully explore, shortly after completing the Ihuykatumu dungeon. From here, the other Aether Current locations for the starting areas of the FFXIV Dawntrail expansion will begin to appear, giving you access to flying mounts for the rest of the game.
There are 10 Aether Currents that you can find while wandering around the Kazama'uka region in FFXIV. I don't recommend going after them right away, though. They won't all become available until you beat the first dungeon before Dawntrail and gain access to the southern region. After you do this, it will be much easier to find the missing ones. The five in the northern region – in Uyuyub, Miyakabek, and Uyuypoga – are the ones you can reach, if you want to grab them. You can always use your Aether Compass to find them manually.
After you've unlocked those 10 Aether Currents, the next step is to complete the five side quests in this area. The quest givers you complete them for will provide you with the final Aether Currents, allowing you to now fly your mount around this area. Having a flying mount makes gathering resources or completing activities in Final Fantasy XIV a lot easier, especially if you've already gone ahead and unlocked Viper or Pictomancer.