1. Walrus can dive to 182 meters to find clams, snails and other food on the ocean bottom.
2. It gives the latest temperature readings from the top of the atmosphere to the bottom of the ocean.
3. The Lamma IV suddenly turned perpendicular with it's stern pointing to the bottom of the ocean.
4. A freshening of the bottom water near Antarctica is consistent with increased ice melt from Antarctica and could affect ocean circulation.