What type of diving suit is suitable for cold water conditions?

A drysuit is specifically designed for cold water conditions as it provides a superior level of thermal insulation compared to other types of diving suits. Unlike wetsuits that allow some water to enter and rely on body heat to warm that water, drysuits are sealed to keep water out entirely. They usually contain insulating materials and may have layers that trap heat, ensuring the diver remains warm even in frigid temperatures.

Drysuits also allow for the use of thermal undergarments, which can enhance insulation further based on the water temperature. This versatility and effectiveness make drysuits the preferred choice for cold water diving.

In contrast, other options like wetsuits, shorty suits, and swimsuits do not provide adequate thermal protection in cold water, since they allow water to flow in and do not effectively insulate against the cold.