Don't swim in the ocean at sunset!

Explanation:
That's shark feeding time. There's no scientific proof,
but statistics strongly support it.
Also, avoid areas where rivers and streams flow into the ocean,
especially after rain. The water carries all kinds of shark goodies
(i.e. dead animals and the kind) and the sharks know it.
It's smorgasbord time for them and you don't want to be
on the menu, do you?

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