The carp stroke involves simultaneous movement of legs (as in the case of the butterfly stroke) but using short and swift rotary movements of outstretched arms. This will create a void which will allow body (which is moved by motion of the legs) to slide with ease in a forward motion. The carp stroke allows athlete to swim in 20 cm of water; it is a stroke that enables safe passage through chorals and broken glass at the bottom of water. It is the only stroke using breast facing down, thus allowing swimmer to have a good sense of direction and avoiding dangerous areas. This stroke saved Raymond-Louis's life, the day he found himself swimming over chorals in Cayo Largo, Cuba (30 cm of water).