Coral use green fluorescent protein (GFP) emissions to attract algal symbionts that provide energy to the coral. Bleaching occurs when coral evict their symbionts which can result in the death of the coral in the absence of new recruitment. Human activity has resulted in five mass coral bleaching events to date. The goal of our research is to use CRISPR/Cas9 genome editing tools to alter GFP expression, thereby increasing symbiont recruitment for long-term reef health and sustainability.