Black Fish Down

We have a Black Fish down, we have a Black Fish down.
The Colonel's canoe is down in the Nile.
Nile infested with crocodiles and hippos.
Advised that all personnel AVOID canoeing or skinny dipping in the Nile.

HMAS MAJESTIC TURTLE was lost moments earlier, all hands presumed lost.
The Colonel was later found floating amongst refuse from last winter's flood. He was alive, and understandably smelly.