Students investigate pH in the ocean through data, explore impacts from ecosystems to human influence, and share insights with presentations and concept maps.

pH in the Ocean invites students to investigate how pH shifts across different ocean conditions and why it matters. Working in groups, they explore one of four topics—pH and marine ecosystems, pH by depth, human impacts on pH, or pH after natural disasters—using publicly available data. Through a jigsaw format, students share findings in short presentations and then synthesize their learning by creating concept maps. This lesson builds skills in data analysis, collaboration, and science communication while helping students connect ocean chemistry to climate change, ecosystems, and the human activities that shape Earth’s oceans.