This chapter from Outdoor Emergency Care: A Patroller’s Guide to Medical Care provides a comprehensive overview of water-related emergencies. It defines drowning and explains various incidents like arterial gas embolism and decompression sickness associated with diving. The text also discusses spinal injuries in submersion incidents and swimmer’s ear, covering their assessment and management. Furthermore, it outlines procedures for patient assessment and treatment in different water-related scenarios, emphasizing safety and prevention strategies.