News.com.au:

A SURF school owner has defended his failure to warn his class that a large shark was swimming close to teenagers on a popular New South Wales beach.
This amazing photo shows the moment the shark, believed to be a 3m great white, surfaced at Blueys Beach on the Mid-North Coast, near Myall Lake on Sunday.
Silvio Rodriguez was photographing other surfers near the surf school students about midday when he noticed a large shadow.