The omoplata is a shoulder lock submission technique commonly used in Brazilian Jiu-Jitsu and other grappling arts. It involves using the legs to trap an opponent's arm while applying pressure to the shoulder joint. This technique can be executed from various positions, often starting from the guard. To perform the omoplata, the practitioner typically sweeps their opponent's arm across their body and then uses their legs to create leverage. The goal is to force the opponent to tap out due to the discomfort or potential injury caused by the shoulder lock. Proper technique and control are essential for safety.