Plastic pollution is fucking marine life.Charles Moore, who first discovered the Great Pacific Garbage Patch, has a TED talk about the problem:

Moore is also featured in the 12-part vbs.tv documentary, “Garbage Island.” (If you want to cut to the chase, I suggest starting at episode 9. If you want to learn about some of the consequences for human health, see the interview with Dr. Frederick vom Saal.)
One of the many ill consequences of our plastic throwaway culture is this:

On the remote Midway Atoll, according to the L.A. Times, 40% of albatross chicks die, their bellies full of our plastic trash. The BBC covers the story here.
Chris Jordan is an artist who “runs the numbers” on our throwaway culture. Here is an example of his work, “Plastic Bottles, 2007.” It depicts “two million plastic beverage bottles, the number used in the US every five minutes”:

Here is a partial zoom:

And a detail at actual size:

Check out more of his work here.