In this paper physics of submarines and airplanes will be discussion in detail. I discussed how submarines and airplanes are similar to each other and how they differ. In this paper design of both of these transporting vehicles have been compared to animals as well. From where physicians/scientists and inventors got an inspiration about their designs. I read a lot of articles to complete this paper and literature review was the best thing to do for this. I compared the design of airplanes with flying birds and submarines with the aquatic lives and analyzed the science behind their shapes and designed structures. This paper not only incorporates the physics of both, but working principles as well.