Below, the 4th episode of Morphology is here:
morphology.www.lisabufano.com

The underwater prosthetic was created by the young engineers of Design Squad in July, 2007. DESIGN SQUAD, a kids’ competition reality engineering produced by WGBH in Boston invited me to offer an engineering challenge for the 2nd season of their show. I challenged the kids to make underwater prosthetics that took their inspiration from sea creatures. I created a podcast with the winning design. The episode (2nd season, episode 5) will air in California:

Sun 05/18 at 08:00am KVIE (PBS affiliate station serving Northern & Central CA, Channel 6)
Fri 06/20 at 3:30pm on KTEH (PBS affiliate station serving San Jose & SF Bay Area, Channel 54)

You can also watch it online:
http://pbskids.org/designsquad/challenges/s2-ep5.html