"Health to the ocean means health to us." - Sylvia Earle
Not so sure about that quote these days. I've been reading where marked increases of radioactivity have been showing up in all forms of sea life here on the west coast due to the Fukushima disaster. Radioactivity or not, I don't think I'd eat kelp although many people do.
On a side note, on the drive out to the coast I was on a two-lane road passing through some redwoods. Up ahead was something on the center line and as I got nearer, it moved right into my lane. A screwy squirrel. As squirrels always do, he stops, decides to go back the other way, changes his mind, turns back and bumpty-bump - right over him. I looked in my rear view mirror expecting to see a long furry tail twitching but no, he scampers off to the side of the road. "He made it!" I think just the plastic up front under the car's engine is all that hit him. Probably rolled him over and he'll be a bit sore for a day or two. I wonder if squirrels can learn from close encounters like that. Probably not.