We have developed the traditional science fair format into an ocean science fair model that promoted the integration of Western science and Alaska Native traditional knowledge in student projects focused on the ocean, aquatic environments, and climate change. The typical science fair judging criteria for the validity and presentation of the science were expanded to include criteria for cultural and/or community relevance, and local and cultural experts were involved in judging. The Center for Ocean Sciences Education Excellence-Alaska (COSEE-AK) provided support for teachers to organize local and regional fairs and for student and chaperone travel to an ocean science ''fair within a fair'' at the Alaska statewide science and engineering fair. This approach engaged Alaska Native and rural students in science practice relevant to their cultures and communities and is being sustained by trained teachers and school districts. The results of interviews of 31 of 44 students participating in the 2013 COSEE-AK Ocean Science Fair at the state level suggest learner outcomes of (1) strong, positive feelings of self-efficacy in science; (2) comfort with being identified as a scientist; and (3) feelings of connection to the student's community and support in doing science projects. The ocean science fair can serve as a model for broadening diversity of participation in science by increasing the relevance of science to culture and communities in areas with ethnic groups and/or rural communities that are underserved by science instruction and resources.