Things to do with your oceanic budget

Dump iron into the ocean to stimulate photosynthesis, drawdown more co2, make the planet net productive. There are many many reasons why this is dumb and can't possibly work, but it has spawned about a dozen seeding experiments which were really cool:
overview
iron ex 1
iron ex 2
soiree link 1
soiree link 2
sofex

More detail would require endless explanation of all things biological oceanography.

--Ms. JATMM of Mount Vernon, VA