Open wide! The basking shark is the second-largest living shark species in the world, but would you believe this giant is a filter feeder? That means it uses its open mouth to ingest food and prey, like zooplankton. . . . . . . . #animalplanet #shark #baskingshark #filterfeeder #zooplankton #sharkweek #discoverychannel #sharksundays #videooftheday