This 29 July 2019 video says about itself:
Massive Deep-Sea Shark Checking Out Our Submarine
Help name our ship and you could win a dive in this submarine.
In partnership with the Cape Eleuthera Institute (@ceibahamas), we managed to achieve history, tagging an animal from a submersible (submarine) for the first time EVER.
Our objective was the deep-sea shark, the bluntnose sixgill. This ancient species predates most dinosaurs, and is a dominant predator of the deep sea ecosystem. The lead scientist on the mission, FSU Marine Lab’s Dr. Dean Grubbs has been the first to put a satellite tag on one of these elusive sharks, but until now had only been able to do so by bringing them up to the surface.