Abstract: A method for repelling predatory animals by the use of aposematic patterns and colorations is disclosed. A man (10) if isolated, alone, or injured in marine or ocean waters (24) is substantially at the mercy of numerous predatory organisms that live and thrive in the marine environment (24) such as for example a shark (26). There are however organisms or animals such as deadly Pelamis platurus sea snakes (28) which possess oposematic colorations such as bright yellow backgrounds (30) with black irregular spots (32). It has been found that sharks (26) typically have an innate avoidance response to these sea snakes. According to the method of this invention, therefore, the man or diver (10) protects himself from the predatory animal (26) by wearing a wetsuit (12) which mimics the sea snake (28) or some other aposematically colored organism. Thus, according to one embodiment the wetsuit (12) will be made of a bright yellow color background (34) having a multiplicity of black irregular spots (36), (38), and (40).