Related Clues:
- Underwater detection technique
- Submarine sensor
- Detection acronym
- Locating device is on a roll, revealing what's hidden
- Echo-location system
- Underwater detector
- Underwater detection device
- Echo-sounding device
- Undersea sensing system
- Ability like a bat's to fly high without collision, ultimately
- Detection system at sea
- Navigation system
- Rocket incorporating new underwater detection system
- What a near-blind creature uses to fly around pole
- Echolocation system