"Don't forget, our special sonar pulse makes us sound like porpoises-and they love those, too."

They would give off a faint sonar pulse for several days, allowing Kemal to swim back and retrieve them later.

We send out little sonar pulses all the time, and study the echoes that come back to see if we're all right.

Patricia risked one active sonar pulse, forward, and got a strong return at five hundred yards.

See where the sonar pulses break up and scatter?

Moments later there was a second sonar pulse.

An invisible sub-one that sonar pulses would seem to pass right through, as if nothing were there!

Her voice is accompanied by sonar pulses and distorted synthesizers.

A moment ago, the monitor's resolution had fogged from a deep sonar pulse, wiping out detail.

He fired off a sonar pulse strong enough, he hoped, to momentarily stun him.