Here are accounts of three very different animals whose behaviors have baffled scientists till now. Scientists are beginning to get at least partial answers for scientific mysteries by carefully observing and testing to see how things work.
Darlings of the Cambrian Explosion, trilobites had spotted markings and sophisticated eyes. Some have been exceptionally well preserved as fossils, down to the level of individual cells.
Biomimetics puts a new meaning into "Make like a tree." Yes, make things like trees, snails, fireflies, and a thousand other creatures do, and life can be inspiring.
For professionals who should be concerned with evidence, many evolutionists are given to rampant speculation. The tipoff is usually a phrase like "may have," "could have," or "conceivably."