![Scientist using a hydrophone to measure sounds of kina in a tank](http://static.sciencelearn.org.nz/images/images/000/000/596/full/Hydrophone20151209-28031-1rzvwgi.jpg?1674164588)
Hydrophones are used to detect sound under water. Dr Radford is using a hydrophone to measure the sounds generated by kina feeding in a tank. The small hydrophone is hanging from a cord in Craig’s left hand.
Hydrophones are used to detect sound under water. Dr Radford is using a hydrophone to measure the sounds generated by kina feeding in a tank. The small hydrophone is hanging from a cord in Craig’s left hand.