Scientists debate whether ctenophores are the earliest animals to appear in the Cambrian explosion. If so, they arrived with multiple tissues, a nervous system, and a digestive system.
Was there ever a more incongruous animal to imagine being a swimming champion?
Brochosomes are intricate, symmetric, secretory granules forming super-oily coatings on the integuments of leafhoppers.
Some organisms cause harm, but are well designed nonetheless. Here’s a second example.