The online streaming giant announced that the song, titled "Tell Me How Long", is about today's climate crisis and the global underwater phenomenon of the bleaching of coral reefs, reported Entertainment Weekly.
The documentary is directed by Jeff Orlowski, while Dan Romer and Teddy Geiger have written the song.
"I was moved and inspired by Chasing Coral and its message of hope for our planet's future. I feel a responsibility to care for the Earth in whatever way I can, and I was honored to lend my voice to the original song," said Bell.
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