By day, hammerhead sharks tend to converge with each other and travel in large schools. But by night, the hammerhead prefers to be solitary and hunt alone. . . . . . . . #hammerheadshark #hammerhead #sharkweek #sharks #discoverychannel #sharkpickles #sharkweek2020 #animalplanet #fishfriday #saltwater #ocean #videooftheday