What threatens the world's oceans? Human activities threaten the world's oceans / Baha'i International Community ; The threat to the world's oceans can be overcome / Jack Sterne and David Wilmot ; Loss of coral reefs threatens the world's oceans / Peter N. Spotts ; Efforts to protect the world's coral reefs are progressing / Timothy R. E. Keeney ; Overfishing threatens the world's oceans / Ben Carmichael ; The threat posed by overfishing is exaggerated / Jim Hutchinson Jr. ; Runoff pollution threatens the world's oceans / Kenneth R. Weiss ; Acidification threatens the world's oceans / Usha Lee McFarling

What ocean policies are best? Federal regulations are necessary to reduce cruise ship pollution / Sam Farr ; Voluntary efforts are adequate to reduce cruise ship pollution / Michael Crye ; Ocean iron fertilization may reduce global warming's impact / Dan Whaley, Margaret Leinen, and Kevin Whilden ; Ocean iron fertilization will not reduce global warming's impact / Andrew Myers ; The United States should ratify the UN Convention on the Law of the Sea / Benjamin Friedman and Daniel Friedman ; The United States should not ratify the UN Convention on the Law of the Sea / Frank J. Gaffney Jr.

What strategies would best promote sustainable fishing? Aquaculture will fill the gap in the seafood supply / William T. Hogarth ; Aquaculture practices are inefficient / Ken Hinman ; Banning bottom trawling would protect deep sea ecology / Joshua Reichert ; Expecting fishing technologies to have no ecological impact is unreasonable / Nils Stolpe ; Marine reserves will preserve dwindling fish stocks / Bijal P. Trivedi ; Marine reserves will not stop destructive fishing practices / National Coalition for Marine Conservation ; Individual fishing quotas benefit U.S. fisheries / Ronald Bailey ; Individual fishing quotas do not benefit U.S. fisheries / Food & Water Watch

What impact do human activities have on marine mammals? The commercial whaling ban is necessary to protect endangered species / Ben Macintyre ; Whaling can be sustainable when properly managed / Philip Armour ; Antisubmarine sonar harms marine mammals / Dick Russell ; Antisubmarine sonar has adequate safeguards to protect marine mammals / Donald C. Winter ; Keeping marine mammals in captivity is cruel exploitation / Humane Society of the United States ; Keeping marine mammals in captivity promotes conservation / Alliance of Marine Mammal Parks and Aquariums.