This simple investigation allows you and your students to look for evidence of ocean air dissolved in ocean water. It can be done in teams, groups or as a demonstration. Ocean air in ocean water is vital to the survival of many ocean living things. Fish and other marine animals breath the oxygen from it. Ocean plants take carbon dioxide out of it and put oxygen back into it. This investigation helps students develop connections between Earth's spheres: linking the atmosphere to the hydrosphere to the biosphere.



Use the materials lists, procedures and discussion questions from the student version to complete this investigation. Adjust the questions and procedure to your grade level.