Faced with the current social-environmental crisis, there is a pressing need to undertake ethical responsibilities toward diverse humans and other-than-humans. We address this ethical imperative by examining how to better understand, value, and respect biological and cultural diversity, to achieve just and sustainable forms of co-inhabitation. This first part of the book draws from the biocultural ethic framework proposed by Ricardo Rozzi, enhancing it by incorporating aesthetic dimensions that link art to biocultural conservation, restoration, and communication (CRC). Challenging traditional notions of art, we invite readers to a deeper understanding of its role beyond mere utility, and we address three key themes: (i) an ontological shift towards a biocultural understanding of art, (ii) reflection on philosophical frameworks for linking art and conservation, and (iii) embodied experiences of artistic practices that foster interspecies relationships. These themes underscore the importance of recognizing the multifaceted nature of artistic expression and its implications for biocultural communities, ultimately aiming to motivate readers towards active engagement in local biocultural conservation initiatives. By bridging the disciplinary gap between cultural and biological diversity conservation, biocultural CRC contributes to socio-environmental justice in the Anthropocene. Biocultural CRC involves collective and participatory actions that respect and integrate multiple knowledge systems. In these actions, art can serve not just as a tool for biocultural CRC, but can also be reinterpreted as a transformative biocultural practice that enhances interspecies and intercultural relationships of co-inhabitation.