Which of the following is not a common feature of SCUBA diving equipment?

A tent is not a common feature of SCUBA diving equipment because SCUBA diving gear is specifically designed to facilitate underwater exploration and safety, whereas a tent is used for camping or providing shelter out of the water.

Diving masks, wetsuits, and regulators are all essential components of SCUBA diving gear. A diving mask allows divers to see clearly underwater, a wetsuit provides thermal protection in varying water temperatures, and a regulator is crucial for delivering air from the tank to the diver. These items work together to create a safe and enjoyable diving experience, while a tent does not serve any purpose in this context and is unrelated to the actual act of diving.