Wreckfish: The fish that gobbles up unsuspecting sharks

These small sharks thought it was just swordfish on the menu - they were wrong.

One shark paid the ultimate price when something even hungrier than him swam out of the darkness.

Follow Newsbeat on Instagram, external, Facebook, external, Twitter, external and YouTube, external.

Listen to Newsbeat live at 12:45 and 17:45 weekdays - or listen back here.