It can tell us about the some of the reactions going on in photosynthetic organisms. There were other sampling devices that recorded the levels of UV light penetrating different depths and of the amount of natural fluoresence in plankton. At about 200m to 300m, the lines indicating oxygen, temperature and salinity all took a sharp turn to the left on the screen. I've spent a lot of time labeling bottles and organizing the material before the niskin bottles come back up. It is important to have averything labeled correctly so that when it is analyzed back in the lab at the university, it doesn't get mixed up.
Tomorrow is our last full day on the boat.
Then we will head back to Oahu to run tests on all these samples we've collected.