I just got a tattoo on August 17th. Im going to Mexico and Im scheduled to go scuba diving for 2 hrs on September 8th. Is this bad for the tattoo?

3 weeks should be ok, provided there’s absolutely no scabbing left. The last thing you want to do is get a still-scabbing tattoo wet; ever get a scab wet and notice how it turns into mush?

I would, however, advise that you put on plenty of sunblock. The sun can destroy a great tattoo.