Sharks: Earth’s Ultimate Survivors

Dinosaurs once ruled the Earth for 165 million years. That's longer than any other creature

has ever dominated our planet. But here's the wild part: sharks were already ancient

when dinosaurs showed up. Sharks have been swimming in our oceans for over

400 million years. They survived every major extinction event, including the one

that wiped out the dinosaurs. While T-Rex was stomping around, sharks were already

considered living fossils. Today, some shark species look almost identical

to their ancestors from millions of years ago. They're basically time travelers with

fins. These incredible creatures have outlasted dinosaurs, survived ice ages,