what is the largest mammal in the world?

The blue whale (Balaenoptera musculus) is the largest mammal in the world and the largest animal known to have ever lived on Earth.

Key Facts:

• Length: Up to 30 metres

• Weight: Up to 180 tonnes or more

• Habitat: Oceans around the world

• Diet: Mainly tiny shrimp-like animals called krill

Despite its enormous size, the blue whale feeds on some of the smallest creatures in the ocean. Its heart alone can weigh as much as a small car.

In simple terms: The blue whale is the world's largest mammal, growing longer than a basketball court and weighing more than many elephants combined.