article_snippet.sent: Swim in good weather - and during the day .
article_snippet.sent: Always swim in a group.
article_snippet.sent: Swim and surf with friends.
article_snippet.sent: Going back to back with other divers mean you can keep your eyes on the challenge from all directions and prepare to fight.
article_snippet.sent: It is important to swim in groups or with one other person to help look out for threats and also put off sharks from attacking .