A humpback whale produces what may be the most elaborate non-human song on Earth: hierarchically structured, minutes long, repeated for hours, shared across a population and revised together over time, carried for miles through water that swallows light within the first few hundred feet. It is sung mostly in a darkness no human eye could function in, to recipients we cannot identify, and overwhelmingly it is never heard by us at all. The most complex music on the planet performs, night after night, to an empty house.
And after more than half a century of study, we still cannot say why. The textbook guess — that it's a male breeding display, a song to attract females or negotiate with rival males — runs into stubborn problems: singers are often far from females, the behavior doesn't always fit a simple mating-call story, and decades of data have refused to settle the question. Newer work probes whether the song carries language-like structure, even finding statistical patterns that echo human language — but whether any of it means anything, in the sense we mean by meaning, is unknown. So we can record the most ambitious composition in the animal kingdom, map its syntax, and track it across an ocean, and still not say what it is for. Fifty years of listening have not reduced the song to a function; if anything they have enlarged it, until it presses on the oldest question there is — why there should be glory at all, and not merely use.
Scripture got to this strange place first. "Leviathan, which you made to play in the sea," sings Psalm 104 — not to work, not to be useful, but to play, to teem, to fill the deep with extravagant life for the sheer glory of it. The whale's unheard song is the truest picture of worship there is: not performance for an audience, not a transaction for reward, but glory poured out simply because the One it rises to is worth it. The universe is shot through with this excess — beauty lavished where no one profits, praise sung where no one applauds — because it was made by and for a God whose worth does not depend on being seen to be real.
By adulthood you have been thoroughly trained to ask of everything: what is it for? What's the return, the use, the payoff? It is a hard habit to bring before God, because it quietly reduces worship to another transaction — praise as a lever, faith as an investment. The whale singing into the empty dark is your correction. Some things exist to be glory and nothing else. You were made to be one of them: not useful to God — He needs nothing — but a voice in a chorus that asks for nothing back, that sings because He is worthy and that is reason enough. Of all the wonders in this collection, this is the one you were built not just to observe, but to join.