Did You Know Narwhals Don't Use Their "Horn" for Fighting?

[Tomoyo Chan]

The "horn" is an elongated tooth with up to 10 million nerve endings, making it highly sensitive. Researchers believe it helps them sense changes in the environment, like temperature or salinity.

 

[Xeth_]

So basically, sharks have built-in Wi-Fi for their surroundings—talk about being tuned into nature’s playlist!