Scientists have shared footage from a rare sighting of a bluntnose sixgill shark spotted near the Phoenix Islands in the ...

The footage, shared by marine research organization OceanX, captures a rare encounter with a bluntnose sixgill shark — a ...

The bluntnosed sixgill shark belongs to one of the oldest shark lineages ... An extinct megalodon tooth compared to that of a modern great white shark shows just how big these ancient predators were.