Excellent buoyancy control is what defines skilled scuba divers. You’ve seen them underwater. They glide effortlessly, use less air and ascend, descend or hover almost as if by thought. They more easily observe aquatic life without disturbing their surroundings. You can achieve this, too. Come practice your buoyancy in the pool before your Spring Break vacation or just hone in on your hovering to keep it up before the local dive season opens. Pre-registration is required.