This is simply sensational stuff.
I've witnessed the Grouper spawning aggregation in Tetamanu ages ago and it remains one of the highlights of my diving career. Last year, a group of French and Swiss researchers and cinematographers did embark on a major mission to document the event, and this is finally the program depicting that expedition. Featuring renown marine biologist and adventurer Laurent Ballesta, it will also document a 24-hour rebreather dive at the height of the spawning cycle when the local Grey Reefies go on a rampage (and here!) among the Groupers.
This being Arte, I expect nothing short of epic - so make sure you don't miss it!
And here's the trailer.
Enjoy - and I mean it!