A dry suit zipper should be considered ______________.

A dry suit zipper is considered critical because it plays a vital role in ensuring that the suit maintains its waterproof integrity. A properly functioning zipper prevents water from entering the suit, which is essential for keeping the diver dry and comfortable during dives. If the zipper fails or is difficult to operate, it can potentially compromise the entire suit, leading to water ingress and a loss of thermal protection. Maintaining and checking the zipper is therefore a crucial aspect of dry suit care that cannot be overlooked. Recognizing its critical nature underscores the importance of proper maintenance and handling to ensure the safety and efficiency of the diving experience.