The Immortal Urchin

Echinoderms are odd animals – about as different from humans as it can get in many regards. Last week I filmed a heart urchin which had lost a good 20% of its body, and seemingly a lot of its internal organs, but it still kept going. The video is below.  More about these heart urchins on the Echinoblog is here and my paper on sea urchins & robots is here.