When German biologist Ernst Haeckel published Art Forms in Nature, it encapsulated his response to Charles Darwins On the Origin of Species. But Haeckel also clearly saw his illustrations as more than just scientific documentation. His elaborate forms have been called a precursor to art nouveau, and his influence even stretched to architecture. For ages 8 and up. WARNING: CHOKING HAZARD – Small Parts. Not for children under 3yrs.