I never had the opportunity to join a tree planting program before I graduated junior high. It's amazing that you guys experienced it. Mangrove trees prevent the erosion of soil along coastal areas and help to purify the water, so this kind of activity really benefits your community.
Undeniably, you had a great day! I am happy you did. By the way, is this mangrove planting an annual event at your school?
That's unfortunate you did not have the opportunity to join one, it's really a good experience.
I guess you could say that, every year—a graduating student has to participate so they can graduate, haha