I thought about sharks I'd seen, and the resemblance to their movements seemed uncanny.

But nobody talks about sharks now, or other threats of old.

"We have the wrong idea about sharks," he said.

He had none of his usual anxiety about sharks and drowning.

It went against everything I had ever learned about sharks.

After that he didn't waste any more time thinking about sharks, especially ones he couldn't see.

Scientific knowledge about sharks before 1916 was based on conjecture and speculation.

A sea I can swim in without worrying about sharks.

He wasn't too crazy about sharks, either, which made him all the more grateful for the timely rescue.

But his goal was not just to reduce concern about sharks.