John Long is a palaeontologist who has studied in depth the 450-million-year history of sharks. When Professor Long joined ABC Conversations he schooled Richard Fidler on some impressive facts about ...
"Learn about the scariest shark encounters and how to survive them in these chilling stories. Secret History uncovers the forgotten, mind-blowing facts that will leave viewers questioning everything.
The longest great hammerhead shark measured at 20 feet, and the heaviest weighed a whopping 1280 pounds! Great hammerhead sharks prefer shallow waters and are usually found up to 262 feet deep.