What are ventral pleats in whales and what are they used for?

they are creases that run down the underside of the whale's jaw to its belly. Basically when the whale eats, the pleats can expand to allow more food to be consumed. read more

they are creases that run down the underside of the whale’s jaw to its belly. Basically when the whale eats, the pleats can expand to allow more food to be consumed. read more

When feeding, the ventral pleats expand like an accordion to accommodate ahuge amount of food-rich water. This adaptation enables the blue whale to acquire and consume approximately 4 tons (3.6 metric tons) of krill daily. read more