Okay, lemme weigh in.
Rule of thirds does not apply when shooting patterns. Patterns can fill the entire shot. So, 1, 2, 4, 6 and 7 are fine. I would even say very good. The addition of a little edge detail is a treat.
3 does follow the rule of thirds and keeping the background more detailed rather than going with a creamy bokey gives the shot dimension. It looks like a serious drop off past the ridges of the coral. Also a good shot.
And 5, the in focus polyps are in the lower 1/3 of the photo. Also is within the Golden Ratio.
Overall, technique wise, very solid.
Good Job.
Mike