I'm trying to find a new water pet to help me with quests, but I can't seem to find any coordinates for those my level that are tamable. Does anyone know where the Tide Syren or Undine Immortal are?

Or just any tamable water pets, cus I've only seen some for lvl 54+ but I need one for a quest.

just any tamable water pets? well, there're the various tortoises you find from the single-digit levels up. mutant whirlers just outside the archosaur harbor are in the 2x levels, IIRC.

i'd go to pwdatabase.com, click on NPCs -> search, enter a level range and click the "only with coordinates" box, and see what comes up. you'll have to scan through land and air mobs as well as untamables, but with a decent level range it shouldn't be too hard.

They're in the Upcoming area to the east, unfortunately. There's really nothing you can tame between the level 37 undine supremes and the level 51 tortoise everlasting.