What an important question. Life started in the oceans and we need to preserve the oceans. In the past we dumped too many toxic chemicals and waste into the ocean and we are now paying for it. What we need to do now is to prohibit this from ever happening again and clean up. So, what can we and the government do?
Frist, the government should prohibit deep offshore drilling for oil. Think of what happened with the BP spill. We need to let our voices be heard. The crazy thing is that BP got permission to drill again.
Second, we need to educate ourselves about what goes into our oceans and monitor the water closely. There are now many organizations that monitor the oceans to see its purity. But people imperfectly know what actually pollute our oceans, like human garbage and excessive boating. Educating yourself will be the most important.