Researcher from the Duke Marine Robotics and Remote Sensing Lab study two humpback whales in the Antarctic. (AP)
A blue whale being tagged in eastern Pacific. Scientists want to find out if they’re eating enough. (AP)
A swarm of krill in the sea. Blue whales swallow a large group, then strain the water out through their baleen (bay-LEAN).
A single krill, close-up.
Blue whales are the largest creatures on earth! They have to eat many calories to fuel their bodies.
Blue whales are GIANT creatures. They eat tons of tiny krill. Why don’t blue whales grow bigger?
Scientists did a study. There are gobs of krill in summer. There might not be as many in winter.