Strength Training for Swimmers - Reverse Shrugs on Dip Bars
Reverse Shrugs on Dip Bars aka Scapular Dips - another effective way to gently warm-up/stabilize the shoulder girdle.
This is a great movement with two key goals: mobility development and coordination. Control the movement - always ensure quality. This is a good movement to do for on-deck activation or within your regular strength training program.