Foam on California beaches caused by tsunami?

I saw this article in the Daily Mail, and the accompanying pictures are pretty interesting:

Tsunami caused by massive Chilean earthquake causes surge in sea foam on California beaches



So I read the article: and I doubt the tsunami connection. One wave does not such amounts of foam make. What does make it are phytoplankton slicks -- the article cites Phaeocystis. So I think the Daily Mail tabloid writers were milking (ahem) the tsunami for the foam connection. More likely is an El Nino connection, with an anomalous phytoplankton bloom in warmer-than-normal waters.

IN a different vein, seeing the picture above kinda makes me think of something like this: