What animal has the longest tongue in the world?

The blue whale has the longest and largest tongue in the world. Its tongue can weigh as much and be as long as an African elephant. It uses its massive tongue to push out water from its mouth when sifting for krill.

The chameleon has the longest tongue in relation to its body size. A chameleon tongue can stretch between 1.5 to two times the animal's body length. It uses this tongue to catch insects on nearby branches.

The tube-lipped nectar bat has the second largest tongue in relation to its body. It can stretch its tongue up to 1.5 times its body length when gathering nectar from flowers.