What is the main difference between a wetsuit and a dry suit?

The primary distinction between a wetsuit and a dry suit lies in their functionality and the way they provide thermal protection. A wetsuit works by trapping a thin layer of water against the skin, which is then warmed by body heat, providing insulation even in cold water conditions. This design allows divers to experience some cooling but maintains a level of warmth as body heat keeps the trapped water warm.

In contrast, a dry suit is designed to keep the diver completely dry. It is sealed at the neck and wrists with gaskets, preventing water from entering and providing thermal protection regardless of the water temperature. The dry suit can be worn with insulation material underneath, allowing for divers to comfortably manage varying thermal environments without being exposed to cold water.

Understanding this essential difference is vital for divers when selecting the appropriate suit for their conditions, ensuring safety and comfort during dives. The other options do not accurately characterize the main functional differences between these two types of suits.