User blog comment:Thailog/Ep. 207 "Depths" discussion/@comment-112.203.91.238-20120610144243

So Artemis' fake death gave me an idea... What if Tula's death was also planned from the start, as Kaldur's excuse for joing Black Manta? I just think he'd still understand why Orin would lie about his father's ID. And if Tula's death really was faked, she should be in hiding someplace. Possibly even with Garth, which is also why we get Lagoon Boy instead of Tempest.

The theory might be a bit of a stretch, but hey, it's Nightwing.