Abstract: A streamlined swimming exercise apparatus which facilitates the efficient swimming of laps in a pool by removing the requirement for the swimmer to turn his or her head to suck in air during swimming. The improvements comprise a mouthpiece designed to fit either over or into the mouth with at least one and preferably a pair of contoured tubes which are curved to generally conform to the shape of the user's face. The mouthpiece may contain one entrance passage for both tubes or may contain two separate breathing passages, a respective one of which leads to a respective tube. The two tubes may either project separately upward and open into the atmosphere on either side of the head, or alternatively, may project around the user's head and come together in a mating channel which then protrudes from a single tube at the top of the user's head.