How does a dry suit differ from a wetsuit?

A dry suit functions by keeping the diver completely dry, using a sealed system that does not allow water to enter. This is achieved through custom fit seals at the neck and wrists, enabling the diver to wear insulating layers beneath the suit for added warmth. In contrast, a wetsuit is designed to allow some water to enter; it then traps this water against the skin, where it warms up and provides thermal insulation. The fundamental distinction lies in the dry suit's ability to maintain a dry environment, which prevents the heat loss associated with water exposure, especially in colder conditions. This feature makes dry suits suitable for colder water diving since they significantly enhance thermal protection without the risk of getting wet.