The visible spectrum is a tiny, almost negligible slice of the electromagnetic spectrum.
'Sonar' has no place in this discussion. It's not even electromagnetic.
The same ones used in the camera for taking the pictures, usually the visible light spectrum waves. Some older autofocusing systems (e.g. one used on some Polaroid instant cameras) used a SONAR ranging system, which used sound waves not electromagnetic waves.
Electromagnetic waves cannot be used in SONAR because they do not travel well through water. Water absorbs and scatters electromagnetic waves, making them unsuitable for underwater communication and sensing. SONAR systems use sound waves, which can travel long distances in water and are better suited for detecting objects underwater.
Bats can detect bio-sonar. They use it for echolocation.
Sonar
Sonar uses sound waves to detect objects underwater, while radar uses radio waves to detect objects in the air or on the ground. Sonar is typically used in marine environments, while radar is commonly used in aviation and meteorology.
sonar sonar sonar sonar SONAR
sonar sonar sonar sonar SONAR
sattelite with sonar
Sonar
Sonar
sonar
No, the Arctic fox does not use sonar. It is not equipped with sonar.