How far can Atlantic salmon migrate?
They can migrate as far as Greenland before returning to native
rivers in Canada
Answer2: In addition to the above comment, I read a very
interesting article about the salmon. In order to breed many salmon
species swim upstream, facing turbulent waters along the way.
Instead of being overwhelmed by the rough water these fish actually
take advantage of it. The do not plough through chaotic water.
Instead when swimming upstream, they conserve energy by using
vortices, or miniature whirlpools , that form where the water flow
is disturbed by rocks, branches, or other objects. As the vortices
form on alternating sides of an object, the fish curve their bodies
from side to side and glide between the pockets of turbulence. Some
schools of fish use the vortices created by the fish swimming in
front of them, effectively riding in their wake. The fish can take
advantage of rhe turbulence created by their own bodies.
Researchers hope to borrow from the salmon's efficient swimming
style to harvest energy from slow-moving water.