Blue whales are the largest animals ever known to have lived on earth. These magnificent marine mammals rule the oceans at up to 100 feet (30 meters) long and upwards of 200 tons (181 metric tons).
Putting this into perspective – 30 meters is the approximate height of a 10-storey building.
Their tongues alone can weigh as much as an elephant!
Blue whales are omnivores. The use baleen to filter out any and all microscopic planktonic organisms. Plankton include larval invertebrates (crabs, shrimp, molluscs, etc.), true planktonic invertebrates (copepods, nematomorphs, mysids, etc.) and phytoplanktonic organisms (coccolithophores, diatoms, dinoflagellates, etc.). Blue whales don’t discriminate when they filter to feed.