This is the first group that we would recognise as sharks today, but it may well have been part of the chimaera branch, and so technically not a shark. As active they had torpedo-shaped bodies, forked ...

Dan Rothermel took to social media and posted photos and video of the group -- including Luke Beard, Jason Rosenfeld and ...

Yet, a group took diving to another level ... If you experience a “bump” from the shark or notice that its pectoral fins are pointed down, it’s best to distance yourself from the creature.