Salmon usually go about their lives quietly, unless they are stressed.
Salmon usually go about their lives quietly, unless they are stressed. Their clicking sound is so unusual that researchers don’t even know if they make the sound with their heads or – yes, the other end.
It’s noisy underwater. Especially just below the surface.
“A lot of the ambient noise is from the wind and waves,” says Kristbjörg Edda Jónsdóttir.
Jónsdóttir is a research scientist at SINTEF, where she found out how much noise the salmon make during normal net cleaning operations as well as how the same salmon produce strange sounds when they feel crowded.
Read More: Norwegian University of Science and Technology
Image: Salmon sometimes produce a mysterious sound. Perhaps they’re feeling a little angry? A little stressed? Researchers hear it the most when the sea cages are being cleaned. Photo: © Stein Johnsen / Samfoto
