Book excerpt: Each year, the Gulf Research Program (GRP) produces an annual report to summarize how funds were used. These reports review accomplishments, highlight activities, and, over time, will assess metrics to determine how the program is progressing in accomplishing its goals. The 2018 annual report is the fifth report in this series. The GRP is an independent, science-based program founded in 2013. Through grants, fellowships, and other activities, it seeks to enhance oil system safety and the protection of human health and the environment in the Gulf of Mexico region and other areas along the U.S. outer continental shelf with offshore oil and gas operations. This report captures key developments and successes in 2018. The GRP continues to build on its past work and seeks to learn, think about, and plan for how and where it can have the greatest cumulative and lasting impacts.