Scientists believe the noise could be being caused by midshipman fish looking for mates in an estuary nearby in Hythe, near Southampton in Hampshire.
Midshipman male fish let out a distinctive drone to let females know they are searching for a mate.
The noise can go on for hours and often increases in volume as competing males attempt to out-hum each other. The noise can also be amplified by the sound bouncing off buildings and ships.
The noise is famous in Seattle in Washington, USA, as Midshipman fish are believed to live in the nearby Duwamish waterway, and people living nearby in Hythe think the noise is similar.
The fish make various noises but the males’ long-duration hum can last an hour. The females respond by laying eggs in the nest made by the male. The hums of competing males can be loud and reverberate off ships or buildings. It is most pronounced at night.
You can here the sound here from an NPR story. It’s very weird and you can see how it will be bothersome.
It was also recorded in Seattle.
I’m glad the residents got their answer.
Tip: Jeb Card