The first piece of equipment that is needed in cold-water dives is a wet suit. A wet suit will keep your body temperature warmer as you dive into colder waters by insulating your skin more. A wet suit may also be used when diving deeper into the water because the farther down you go, the colder the water gets. This is the number one way that you can keep your body safe from underwater frostbite. Warm water wet suits can also be used sometimes to keep sea urchins and other dangerous things away from your skin.
Another piece of equipment that can be used in cold-water temperatures is booties, or dive boots. These dive boots will help keep your skin protected from cold temperatures. Booties also may keep your skin protected from sharp coral.
The next piece of equipment that can be used in cold water, especially deeper in the ocean, is a lamp. Specially designed underwater flashlights or lamps are used primarily in deep submersions, but may also be used in night dives.
The final piece of equipment needed for cold water dives is dive hoods. Just like the boots, the hood is placed on your body to protect if from the extreme temperatures. Your head, like your hands and feet, is unusually susceptible to cold temperatures.
These four pieces of equipment are essential to cold-water dives to keep your more comfortable and safe.