The blue whale is the largest animal on Earth, weighing up to 200 tons and having a heart the size of a Volkswagen Beetle. It communicates using extremely loud calls that can be heard for hundreds of miles. While commercial whaling has ceased, blue whales remain threatened by environmental changes, ship strikes, and fishing gear entanglements. The annual drive hunts in Taiji, Japan result in the brutal killing of hundreds of thousands of dolphins and small whales over the fall and winter months using methods that can take many minutes for animals to die. Despite introducing a dolphin swim program, the people of Taiji intend to continue their traditional slaughter.