Micro- and nano-plastic pollution poses a significant environmental and health challenge. This chapter explores the potential of public awareness campaigns and behavior change strategies in mitigating this issue. It delves into the critical role of social media and influencers in fostering sustainable practices. The chapter examines effective communication channels, messaging strategies, and audience segmentation to optimize campaign impact. It also analyzes the influence of influencers on shaping public perceptions and driving behavioral shifts. By understanding the dynamics of social media and influencer marketing, policymakers, environmental organizations, and businesses can develop targeted interventions to reduce plastic pollution and promote sustainable lifestyles. This research contributes to the growing body of knowledge on effective communication strategies for environmental challenges.