An expert on whales was telling friends about some of the unusual findings he had made.  "For instance," he said, "some whales can communicate at a distance of 300 miles."

"What on earth would one whale say to another 300 miles away?" asked a sarcastic member of the group.

"I'm not absolutely sure," answered the expert, "but it sounds something like this: 'Heeeeeeey!  Can you hear me nowwww!?!'