Opportunities in Ocean Sciences: Challenges on the Horizon -- Introduction -- CONTEXT -- IMPROVING THE HEALTH AND PRODUCTIVITY OF COASTAL OCEANS -- SUSTAINING OCEAN ECOSYSTEMS FOR FUTURE GENERATIONS -- PREDICTING CLIMATE VARIATIONS OVER A HUMAN LIFETIME -- MODERN OBSERVATIONS AS AN ENABLING TECHNOLOGY -- CONCLUSION -- BACKGROUND DOCUMENTS -- APPENDIX -- OCEAN STUDIES BOARD -- Staff -- OTHER RECENT PUBLICATIONS FROM THE OCEAN STUDIES BOARD.