I am in awe of the thousands of FOF's in this level. How did you even manage to make that all in one lifetime?
Beautiful map, I can tell you put your heart into this map. I'm totally impressed by how fully you managed to catch the Aquarium Park feeling. Of course, the music, being my favorite Sonic Colors track, helped a lot, but it stands solid apart from that.
Lots of compliments I could lather on about it, but I'll save that for until the level is completed.
A few faults I'm gonna mention instead, so you can fix them. First, I was a bit stumped when I knew I couldn't get over the bridge. I was hesitant to go into the canyon, and the green lines on it were the only thing that convinced me. And then, at the end of this place, they led into what looked like a black wall, until it turned out to be the edge of the water. Now, I have to say, I was operating on pure instinct there, because my mind was telling me "stop! This isn't the right way to go!" That's probably not a good feeling people should get when playing your level. Do something about that black wall, because it really is a bit confusing.
Then, I know you already know of this, but the lag. And oh, the lag! I've never even seen anything like this. IT wasn't just framerate lag, it was seriously slowing my progress down to a crawl whenever I faced the main area. Some abundance of FOF's is most likely causing this, and I suggest you find something and do something about it.
One other real piece of advice I have about this. Now, some of the people here might take issue with what I have to say, it being more visual than technical, but I'm going to say it anyway.
The ocean is one of the most beautiful part of the whole creation, in my opinion, and being such a lover of it, this level would obviously hit home with me. I was a bit disappointed with this aspect when I first saw the underwater sections. They seemed very bland, and flat, not nearly what I would expect in such a submerged paradise. The technical, racing aspect of them is fine, but visually, they're a bit lacking. If I were you, I'd spend a bit of time touching up these areas a bit. Perhaps some custom coral, and sea life, and certainly some oceanic sector based scenery and landscape. Even better yet, perhaps some large jellyfish off in the background, like you see in the original Aquarium Park. Some large sprites would do the justice, I think... As long as they weren't too near the track, you wouldn't have any trouble with the sprite characteristics of them. Do a little more with the underwater environment, and I think it could be quite a bit more impressive to the player. If you need some inspiration... Just play Act 3 of Aquarium Park in Sonic Colors!
Now, mind you, I think above the water is pretty good, although it could perhaps use some decoration on the stone cliff ledges. Besides that...
Awesome level, Hinote!