Complex sentence: Also, for ecological reasons, contact with coral should be avoided at all costs because even boulder corals are fragile and a soft touch can cause decades worth of growth to be undone in mere seconds, and the coral may never recover.
Split into simpler sentences: Also, for ecological reasons, contact with coral always should be avoided because even boulder corals are fragile. A soft touch can cause decades worth of growth to be undone in mere seconds, and the coral may never recover.