In order to address the problem of the single function and form of the offshore oil recovery device, a method of bionic design, which was constructed using the bionic design program from bottom to up, was proposed. Firstly, in order to determine the bionic target set, the set of intentional images of the biological features was obtained using the synectics method. Secondly, the Harris chart was employed to screen the target set to determine the bionic prototype. Thirdly, the biological simplification and optimization method was utilized to analyze the structural feature relationship of the bionic prototype, and couple the structural features and the main design elements obtained using the approach of morphology analysis, thereby producing a preliminary design plan of bionic modeling. Fourthly, the concept of fuzzy sets in fuzzy mathematics was used to rank the design plans to determine the priority. Fifthly, the best design plan was selected for modal analysis to verify whether the plan could meet the requirements of structural dynamics, thus establishing a bionic design method that could shed light on the whole system. Based on this method that could guide the design, we could obtain the oil spill recovery device of manta ray bionic style, which could meet the design requirements and was of high coupling degree between function and form. By applying the constructed design model to the bionic design of products, it can provide effective theoretical guidance for the design of the marine application product, and help elevate the overall level of marine technological products.