A lot of people on this thread are mentioning indirect methods of preservation such as lowering your personal carbon footprint which is great. However, I haven't seen mentioned one of the biggest ways to do so, that being through your diet. Slowly adjusting your eating habits by lowering your meat consumption can help immensely. One of the biggest contributors to greenhouse gas emissions is methane gas produced by livestock (mainly cows). Also, the sheer amount of resources (fresh water, cattle feed, transportation equip, etc.) involved in growing a steak is ridiculously unsustainable and harmful.
I grew up eating meat everyday and recently some friends have been trying some plant-based alternatives and vegan options in general. I promise you wont miss meat as much as you think you will once you establish some healthy eating habits. I highly recommend watching Gamechangers on Netflix; definitely an eye-opener when it comes to eating cleaner, benefits and what not. Anyway, I digress. I am grateful that there are likeminded reefers thinking about the seriousness of coral reef degradation and trying to give back where they can.