The present invention provides a method of manufacturing a scuba tank caddy, having an optional gear drying rack and an optional portable shower, for improving the comfort and convenience of the scuba diver, and a scuba tank caddy thereby manufactured. The method of manufacture generally comprises steps of: (a) providing a tank-holder, having a floor, a full-span of at least one tank diameter, and a mid-span located at one-half the full-span; (b) providing an axle, having two ends, the axle being rotatably mounted to the tank-holder at the rear side; (c) providing two wheels, each wheel of the two wheels being rotatably mounted to each of the two ends of the axle; (d) providing a handle assembly, having a handle stem and a handle bar; (e) providing an elongated tank-holder stem oriented normally to the tank-holder floor, having a top and a bottom, the bottom being mounted at the mid-span of the tank-holder and the top being coaxially oriented with and collapsibly mounted to the handle stem; and (f) a tank-retaining mechanism, the tank-retaining mechanism being fastened to the elongated tank-holder stem near the second end, thereby producing the scuba tank caddy. Subsequently, at least one tank and dive gear are placed in the caddy. The scuba diver can then roll the caddy containing his/her gear and at least one tank along the ground by merely holding the handle bar, with the caddy angled toward him/her, while walking to the dive site. Additional advantages include, but are not limited to, retractable wheels, telescoping shower head, tank-pressurizing freshwater shower, and corrosion-resistance. The present invention also uses corrosion-resistant materials, such as polymers, resulting in a durable, convenient, and cost-effective product for the scuba diving industry.