Biomimicry is something I haven't checked up on for a while. I initially came across it while I was reading up on David Suzuki. One of the major contributors to this arena of research is Janine Benyus, who has been compiling an in-depth listing for:
"...Google for Nature’s Solutions—a public database of biological literature organized by design function. She is also developing a “biology- taught-functionally” course for engineers and designers, the only biology most will encounter in their university education. These projects are intended to create a flow structure so that nature’s ideas can move freely into human systems design."
Her book "Biomimicry: Innovation Inspired by Nature" is on my must read list. It's interesting to see the close relationship biomimetics has with nanotechnology and robotics research. This is the opposite end of the spectrum from Benyus' approach which has more to do with developing sustainable designs inspired by nature.
IOP Electronic Journals has an interesting section for bioinspiration and biomimetics research papers...