[Kaldur sighs.] It seems to be random, this is going to make it difficult to figure out.

[He tilts his head at the screen then back to Seadramon.]

I would say she is more of a sea serpent than a dragon. But I suppose the 'dra' in her name might indicate otherwise.

Aren't they the same thing?

Perhaps. But she will not hurt you either way Fluttershy.