상어 vs 돌고래: 피의 전투 (2020)

They've shared the ocean for thousands of years, but scientists have only begun to understand the relationship between SHARKS and DOLPHINS. New research allows us to peer into this incredible drama; redefining everything we thought we knew about sharks. They're stereotyped as independent loners, serial killers of the sea-but we've observed them hunting in teams, learning, and even passing on knowledge to fellow sharks.