The main purpose of this legislation is to extend and enhance programs aimed at reducing plastic waste and marine debris through the Environmental Protection Agency (EPA). It specifically amends the existing Save Our Seas 2.0 Act, which was originally designed to address issues related to ocean pollution and promote better waste management practices. Key provisions of the legislation include the reauthorization of certain EPA programs that focus on combating plastic waste. This involves updating the timeline for these programs, changing the expiration date from 2025 to 2030.