It's algae season! Woohoo! Bring the kids!
Alga gets bad reputation. Icky. But I think it's beautiful. And come to find out, it could be a natural resource. I just read this article that says algae are rich in oil, and a potential biofuel. (Of course it's going to take extensive research to work out the bugs.)
I took this picture in the Lower Arroyo a couple of weeks ago, so I don't know if the algae are still flowing there, but they're prolific at Hahamongna. Hey! This could be a real resource for Pasadena!