The Last Light Under Glass by Catherine Queen is a visionary science fiction novel set in a future where humanity survives beneath the ocean in the city of Pelagia after the sky was burned by catastrophe. When vast luminous ocean beings begin communicating through harmonic resonance, scientist Mara Ellison helps forge an unprecedented partnership that strengthens the dome, restores ecosystems, and ultimately reopens the path to the surface world. As humans and ocean intelligences learn to build together rather than dominate, the novel becomes a powerful meditation on survival, humility, and the rebirth of a planet through shared stewardship instead of isolation.