A close call with a great white shark spooked a group of boaters on a trip off Port Victoria, South Australia, on December 26.Alex Stevens, who captured the sighting on video, told 9News the five-metre-long fish “popped out of nowhere,” circled her boat for around 20 minutes but was not aggressive. Stevens admitted to have screamed when asked by an Instagram user, saying she was “scared it would knock the boat.” Credit: Alexandra Stevens via Storyful