Why are all the sea creatures dying and what as a global community can we do?

I can see from your flag that you are Australian. Nice question, but we really need more information to begin to even guess.

- Is there an age or gender pattern in the dolphins washing up? Young? Old? Males? Females?

- Are the dolphins emaciated?

- Do they have sores, and what do the sores look like?

- Are they wounded?

- Is their skin red? Do they look like they have been burned?

- What symptoms are there?

This problem has been happening in Japan, http://news.xinhuanet.com/english/sci/2013-04/01/c...

the Arctic, http://www.alaskadispatch.com/article/20130313/cou...

the Gulf of Mexico, http://www.wwltv.com/news/local/Spike-in-marine-ma...

Southern California, http://www.nbcbayarea.com/news/national-internatio...

and Eastern Florida. http://eponline.com/articles/2013/03/22/manatees-a...

The problems are not necessarily the same, but they might be. Give us information if you have it.

Chem Flunky's answer is not correct, some shellfish actually increase with more Co2, with coccolithophores it has been found that in the last 220yrs they have increased their shell calcium carbonate by 40%, and research has shown invertebrates like crabs lobsters and shrimp do well, although corals not so well. to make calcium carbonate you need Co2, and some plankton are so well adapted to using Co2 that they act as a huge Co2 sink turning Co2 into limestone which can be locked away for millions of years.

The sea creature die off is more likely to be due to toxic waste, fertilizer run off causing toxic algae blooms, or anoxic ocean up-wellings, or even virus outbreaks.

There are a few major problems that are causing the deaths of fish, dolphins, and other sea creatures.

Ocean acidification, caused by atmospheric CO2 being absorbed into the oceans, is causing problems for anything in the ocean that forms a carbonate shell, including certain types of algae. This causes problems all up the food chain. We can fight this by reducing atmospheric CO2, or by putting buffers or bases into critical areas of the ocean.

Pollution is causing direct problems to fish and dolphins. We can reduce this by no longer treating the ocean as a convenient place to chuck our garbage.

Overfishing is also causing significant direct problems to fish and dolphins. We can fight this by managing our fishing better, including stricter limits on overfished species or areas, and possibly also by farming more fish (depending on the method and food source for the farmed fish).

edit:

Kano, I specified "carbonate shell". Coral, clams, certain algae, and so on. Not arthropods.

There has not been an actual increase in things washed up on shore, but an increase in news stories about such things.

Be careful of asking for any government to take this issue on. Anytime you get them involved, they will take your ability to live and charge you lots of taxes to care for the issue.