No, Spongebob, I'm not Squidward. I'm just a blb of algae walking away

Scientists discover that octopodes* “walk” away from predators underwater on two tentacles. Just on the evening news, and here:
http://story.news.yahoo.com/news?tmpl=story&cid=514&e=7&u=/ap/20050324/ap_on_sc/walking_octopuses

*The proper plural of octopus, and itself the topic of more than one thread here at the SDMB. Please don’t start another one.

Interesting stuff, but there’s a touch of the humourous about it. It’s the “disguising itself as algae” part I think. It conjures up images of Wile E. Coyote tip-toeing in short bursts whilst hiding inside a fake tree trunk.