well here is some mistake of you also , you should not tell the mistakes of the person directly, you should just give him the hint that its seems to be incorrect thats it after that he will decide what to do with that , he will correct the mistake and after that its all over thats it. after leaving the reef, you will be instructed to shower and return the equipment before heading off to your next adventure. you are now finished with the glass for the button! sometimes, it will be, and sometimes, it won't matter at all. 