Hi, you're about to get smarter in just a few minutes with Curiosity Daily from Discovery.

Time flies when you're learning super cool stuff. I'm Nate.

And I'm Kali. If you're dropping in for the first time

welcome to curiosity where we aim to blow your mind by helping you to grow your mind.

If you're a loyal listener, welcome back. Today you'll learn about how some sharks have social relationships, how shark attacks often happen

because swimming humans look like other sea creatures, and how your cat might be snacking

on endangered sharks.

Without further ado, let's satisfy some curiosity.

Cali, we've got a great friendship, but did you know some sharks also build close relationships?

Really? I always thought they were more of solitary creatures. Well,

researchers recently found that bull sharks can develop meaningful relationships

with each other. These bonds approach what we think of as friendship. They may even have a distaste for some of their

peers as well. How cool is that? That's incredible. How does that even work

though? Scientists at Fiji's Shark Reef Marine Reserve collected data from more than 3,000 sharks over the course of 14 years

and discovered that some sharks prefer to keep company with certain other sharks.

They'll follow them around as they hunt, swim, and even sleep.

Following them around, how could they be sure it was friendship and not just some hunting benefit

or something?

They wondered the same thing, so they used social structure analysis based off of behavioral data of those more

than 3,000 sharks. Unfortunately, even with this data they couldn't pin down

an exact clear reason as to why they'd hang out. But the researchers did notice that some of the sharks

had similar personality traits like boldness or curiosity with the sharks they hung with.

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