Neither.
they have baleen.
they are teeth not Baleen whales
it has teeth
blue whales open their mouth with their baleen teeth and just center and swim so it goes into its mouth and then the blue whale swallows its prey.
Baleen .
They have teeth because they are toothed whales.
Baleen whales use their baleen plates to filter feed. They eat small fish, krill and plankton.
Baleen whales!
Sperm whales have 70 teeth, depending on their age.
How many teeth? None. Humpbacks are baleen whales.
Many whales do have teeth; that is why they are called toothed whales. Baleen whales don't need teeth because their baleen plates filter out the plankton they eat.
The whales with teeth are called toothed whales. The ones that don't have teeth are called baleen whales. Baleen whales use filters to drain out water from plankton.