Final addition to the team:
Lumos the Lanturn (Hasty, alert to sounds, ♂)
Another 3 star capture. IIRC, it had low attack, mediocre defense, good special attack (20+) and perfect IVs for the other three. I really like Lanturn, probably because Water/Electric is such a cool typing. It also amuses me that Game Freak took inspiration from anglerfishes to make such a cute and cheery design when it would have been so much easier to go the monstrous route.
Metang and Vertigo have evolved. I decided to teach Fly to Nimbus for the sake of convenience, and Lumos has both Surf and Dive for the same reason. For a while, I was using a Sharpedo to travel; the speed sure was nice.
I've got my seventh badge now. Next stop is the Seafloor Cavern, but I'm going on a bunch of detours before then. I think I've hit most of the dive spots now. The routes with the one-way swift currents are really annoying. There is at least one little island with a hidden item that I can't figure out how to get to (there is only a single one-space-wide path to it, because it's otherwise surrounded by currents that push away from it). I'm probably going to give up on it for a while, maybe forever. Looking at Bulbapedia, I've already gotten the most important items (two TMs).
I'm wondering what the Seafloor Cavern was like before Team Magma got there. When possible, I like exploring areas before they are significant, mainly to see what kind of meaningless obstacle is there to prevent me from moving forward. But when I visited the Seafloor Cavern area earlier, I didn't realize I thought surfacing in the center would just put me in the middle of the ring of land seen on the surface, so I didn't bother. I didn't realize there was a cavern inside... in retrospect, that was really stupid.
Edit: actually, now that I'm checking the actual location again, I think I might have been here before, and there was just an NPC blocking the entrance.