Coral bleaching: the heat threshold that kicks symbionts out

A 5-beat faceless video outline for “Coral bleaching: the heat threshold that kicks symbionts out” in the Coral reefs explained niche, derived from caption timing of 2 reference videos.

Angles

• Cold-open on the concrete hook from the primary reference — PBS leads with a scene, not a definition dump
• Make the mechanism explicit with one visual beat: Coral nurseries like this are places where we can radically increase the number of new cor…
• Contrast or scale-up using the second reference (CTV News): WAS ON WILDFIRES AND FOR THAT ON TORNADOES AND AS WE WARNED THE OCEANS, THE ENERGY THAT CA…
• Close on what the viewer can check themselves; original narration only — do not copy reference wording

Beat-by-beat structure

1. Hook (0:00–0:30): open on the puzzle of 'Coral bleaching' in one image.
2. Setup (0:30–2:00): define the key terms in plain words; borrow structure from PBS, not lines.
3. Mechanism (2:00–5:00): walk the cause-and-effect with one diagram; cite the evidence beat (Coral nurseries like this are places where we can radically increase t…).
4. Contrast (5:00–7:00): show the common myth or the second case from CTV News.
5. Recap card: three takeaways + one 'check this yourself' action. Original narration only.

Reference videos

• What is Coral Bleaching? The Fight to Save Coral Reefs | Weathered: Earth's Extremes gURnYrJQp28
• Oceans break heat record, what does it mean for the planet? | EXPLAINED I_beS3qZYmg

Method

yt-dlp VTT captions (manual/uploader only) → timed beat heuristics → editorial topic synthesis (no ASR). Structure only; write original narration.