SHARKS

In some form, sharks have been around for about 400 million years. 

Even before dinosaurs roamed the earth, sharks hunted through the oceans!  They're such good survivors that they've had little need to evolve in the last 150 million years. 

These ancient predators fascinate adults and children alike.

Scientific Information:  Sharks belong to the class of fish, Chondrichthyes.

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[in Spanish]