Thresher Shark Boasts World's Longest Tail, Exceeding Body Length

Imagine a shark that has a super long tail, so long it can be as big as its whole body!

This is the common thresher shark.

Its tail is made of bones, just like our own tails would be if we had them.

Other animals might have things that look like tails, but they aren't made of bones.

So, when scientists talk about the longest tail, they mean the kind that a thresher shark has, which is attached to its backbone.