CRISPR/Cas9-mediated genome editing in a reef-building coral

Read the research article “CRISPR/Cas9-mediated genome editing in a reef-building coral”. In your own
words, summarize (300-500 words) the main goals of this research, the methods used and the findings that resulted from the study.
https://www.pnas.org/content/pnas/115/20/5235.full.pdf
Preferred language style Simple (Easy vocabulary, simple grammar constructions)