Gravity briefly loses. At sunrise, a humpback rises, twists, and lands with a report that can travel beyond the visible arc, turning a show of muscle into a possible message for animals over the horizon. The breach costs plenty. It may be speech.
One explanation is more persuasive than the rest: a breach can combine acoustic propagation with a surface display, sending underwater impact sound while presenting a visible body signal to whales nearby or far off. This is not silent theater. In behavioral ecology, that combination is termed multimodal signaling, and it may advertise location, arousal, or social intent when a group is scattered. Context governs meaning. Other hypotheses remain alive. Breaching may remove parasites, follow pursuit or play, or reflect group excitement; a single splash therefore cannot be decoded like a word.
Dawn is probably an accomplice, not a cause. Low-angle light may make a leaping body easier for distant eyes to register, yet no firm evidence makes sunrise a universal trigger; humpbacks breach under varied conditions and at other hours. The splash is a wager. For an animal built for depth, the sea's loudest punctuation may be addressed to listeners it cannot see.
