Thermal protection is more than choosing between a wetsuit and a drysuit. In Chapter 4, we explore Sharkskin, hoods, hooded vests, heated systems, and advanced materials that help divers stay warmer, longer, and smarter underwater.

You don’t need cold water to get cold. Even in tropical Indian dive sites, your body loses heat every minute underwater. That “slight chill” affects your breathing, nitrogen absorption, and overall safety. Thermal protection isn’t about comfort, it’s a critical part of safe diving. Here’s why every diver should take it seriously.