Search results for “sleeper shark”

Miraculous shark teeth

The sharpest weapon of most sharks are their teeth. On the inside of the jaw are many teeth: Behind each front tooth there are up to 15 rows of replacement teeth. In the course of its life, a shark grows up to 30,000 teeth. Author: ZDF/Terra X/R. Marel/S. Hillmann/C. Gerisch/A. Kindler/SpiegelTV/Ma

How Much Sleep Do You REALLY Need?

What if you only slept one hour a night? Or two? Or three? Life Noggin is a weekly animated educational series. Whether it's science, pop culture, history or art, we explore it all and have a ton of fun doing it. Life Noggin Team: Director/Voice: http://lifenogg.in/patgraziosi Executive Producer