If you pull a 1920's fire extinguisher out of the ocean, for pete's sake don't drink it!
Oceanographer Curtis Ebbesmeyer is a fascinating source of information. He appeared again on my local public radio station to discuss issues related to garbage floating in the ocean. For example, at the 5:05 mark, he reminds us that, if you pull a 1920's fire extinguisher out of the ocean, you shouldn't drink it. Other fascinating facts: