The blue whale, the largest animal known to have ever existed, is a marvel of the ocean. Found in all the world's oceans, these magnificent creatures can reach lengths of up to 100 feet (30 meters) and weigh as much as 200 tons.
Characteristics
**Scientific Name**: *Balaenoptera musculus*
**Habitat**: Open ocean, often near the surface
**Diet**: Carnivorous, primarily composed of krill
