Shark Week 2021: To track down New Zealand's monster great whites, researchers build a submersible designed to look like a shark and pilot it deep into what they believe could be a mating ground -- the Holy Grail of shark science.
Shark Week 2021: To track down New Zealand's monster great whites, researchers build a submersible designed to look like a shark and pilot it deep into what they believe could be a mating ground -- the Holy Grail of shark science.
