Juvenile Bull Shark at Chumphon Pinnacle. Source.This is as unequivocal as it gets!
Forget the debate: the Sharks at 02:08 ff are most certainly not Grey Reefs!
I've also perused the paper by Juerg that states
The Chumphon Pinnacle sharks are most similar in external morphology to the bull shark and the pigeye shark (Carcharhinus amboinensis). From the latter, the bull shark differs in its lower, less erect first dorsal fin and higher, more erect second dorsal fin. Furthermore, the ratio of first:second dorsal height is 3:1 or less in Carcharhinus leucas, but over 3:1 in C. amboinensis.
Case closed.
Anyway, enjoy the video - very nice!
H/T: Robin!
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