Ocean acidification is a pressing environmental issue that is often overshadowed by its more well-known counterpart, climate change. However, its impact on marine ecosystems and the global carbon cycle cannot be underestimated. As carbon dioxide (CO2) emissions continue to rise, a significant portion of this greenhouse gas is absorbed by the ocean, resulting in a decrease in pH levels and increased acidity. In this article, we will explore 16 extraordinary facts about ocean acidification that shed light on the severity of this problem. From its effects on coral reefs and shellfish to its implications for marine biodiversity and the economy, understanding the consequences of ocean acidification is crucial for tackling this issue and preserving the health and balance of our planet's oceans.