Jansen is both an artist and a physicist. He has been creating these Strandbeests (beasts who walk on the sand) since 1990. Outside his studio in Delft, Holland he keeps 30 miles of tubing always at hand. This tubing and pvc pipe are the foundation of the creatures. I got to visit 2 elderly, slightly lame 'beests' at Crane Beach in Ipswich. It was an amazing event in conjunction with an exhibit of more creatures at the PEM in Salem, MA. Watch this video!!! You'll be hooked!!! Many more on YouTube along with a TED Talk.