They don't.
Blue whales belong to the group of baleen whales - filter feeders. They don't have the teeth to bite things apart and they don't have the throats to swallow big thing.
But they're big and powerful animals. If a diver/swimmer would annoy them, they could certainly grasp one and drag them down. Maybe even gum them to death.
Yes blue whales eat shark,other whales,and jellyfish.
Yes, blue whales do eat krill. They eat a lot of it too!
No, Blue whales eat only plankton and krill.
Blue whales mostly eat krill, which is a kind of zooplankton living in the ocean.
Penguins do not eat blue whales. They'd have to peck for hours only to get through the skin.
no. blue whales aren't human eaters. The only thing the eat is plankton
Most whales like humpback whales, sperm whales, and blue whales eat krill or plankton. Killer whales eat penguins, seals, or turtles.
killer whales eat fish where as blue whales eat mostly krill.
Blue whales love krill and eat almost 40 million a day.
To humans? No. Blue Whales do not eat or (without provocation) harm humans.
full size blue whales i'm pretty confident
Blue whales eat krill not crabs.