Whistle

Meanwhile, you're referee.

You may begin speaking at the tone.

Blows Whistle Car number ten.

Blow that whistle, Adam!

Adam, what are you doing to that whistle?

Everybody that's got to jump when somebody else blows the whistle.

Answering machine At the tone, please BEEP.

At the tone, please... (Beep)

That whistle just keeps blowing. I'm so sleepy in the morning.

Add this buzzer for some extra punch and you've created a noise machine.

The computer can localize who requested the toy if there's a word match.

Now, researchers have actually measured whistle complexity using information theory, and whistles rate very high relative to even human languages.

So Diver A and Diver B both have a wearable computer and the dolphin hears the whistle as a whistle, the diver hears the whistle as a whistle in the water, but also as a word through bone conduction.

What we hope will happen is that the dolphin mimics the whistle, and if Diver A has the sargassum, if that's the sound that was played and requested, then the diver will give the sargassum to the requesting dolphin and they'll swim away happily into the sunset playing sargassum for forever.