WOW! Nellie, a WRAL TV viewer, sent us this AWESOME video of a 5-foot-long shark swimming up close to the beach at Emerald Isle on Friday. Nellie said the shark swam up, looked around and then took off. | WRAL TV

This is the gnarly, awesome tooth whorl of the shark-like Helicoprion. What you’re looking at is a spiral-shaped cluster of teeth - the tooth whorl - which was in the lower jaw. As new teeth formed, the older teeth were pushed into the centre. Gotta shout out the brilliant artwork by Ray Troll over at Paleo Nerds: a Prehistoric Podcast. | Dr Dean Lomax - Palaeontologist

The largest fish in the ocean 🐋🦈 #whaleshark #SharkWeek starts July 11 on Discovery and streaming on discovery . links.discoveryplus.com/sharkweek 🎥: Mike Nulty & Silver Shark Adventures | Shark Week

Happy Fossil Friday! Today we’re talking about the extinct, shark-like fish with a buzz saw on it's face - the Helicoprion. | Animalogic