Guardians of the Red Sea: The Hidden World Beneath.

The Red Sea's coral reefs are, in the entry's words, 'one of the most resilient and diverse marine ecosystems on Earth', but human activity and climate change pose growing threats to them (MUSE).

The documentary takes viewers underwater, from coral gardens to elusive species, explores how these corals 'have withstood rising ocean temperatures while much of the world’s reefs face decline', and covers the science behind them and the urgent need to protect them. The entry calls it 'both a celebration of an underwater treasure and a call to action' (MUSE).