Which stroke involves a simultaneous arm pull and a frog kick?

The breaststroke is characterized by its simultaneous arm pull and frog kick, making it unique among swimming strokes. In this style, swimmers perform a sweeping motion with their arms, pulling backward through the water while their legs execute a frog kick. This coordinated movement allows for effective propulsion and is integral to the stroke's mechanics. The arms and legs move simultaneously to maximize efficiency and maintain the swimmer's momentum.

This differentiates the breaststroke from other strokes. The backstroke involves alternating arm movements and a flutter kick, the butterfly stroke uses simultaneous arm pulls with a dolphin kick, and the freestyle stroke features an alternate arm movement with a flutter kick. Each of these strokes has its own distinct technique, which highlights the special nature of the breaststroke with its simultaneous actions.