Specifically, do they swim against strong currents? Rapids? Occasionally breach the water to jump over obstructions and small waterfalls?
2006-10-23 15:15:04 · 11 answers · asked by Marco S 1 in Science & Mathematics ➔ Zoology
Yes during their mating season
2006-10-23 15:24:41 · answer #1 · answered by Princess 3 · 0⤊ 1⤋
Yes to all. they spend most of their adult lives as sea fish, but when nature calls them to mate and reproduce, they seek out the freshwater stream they were born in, and swim upstream past rapids, even waterfalls and dams. when humans dam a river that salmon use, we often create "water ladders", a type of artificial waterfall for the salmon to get around the obstruction.
During their journey, many salmon are caught be fishermen, by bears and by other predators. The "lucky" ones make it to the headwaters, where they mate, produce millions of fertilized eggs, and die of exhaustion.
They never live to see their young hatch.
Incidentally, the bodies of the deceased are eaten by predators and scavengers, then are spread as manure and serve as a rich fertilizer, contributing to the diversity of forest life in the northwest...
2006-10-23 22:28:56 · answer #2 · answered by chocolahoma 7 · 2⤊ 1⤋
ya, its very much true salmon fish swim against the stream of water to lay their eggs for reproduction,,,,,,,,, becoz they cant lay their eggs in running water
2006-10-24 00:53:31 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Yes.. a lot of them die though and its gross when dead fish pile up on the river shore near where I live.
2006-10-23 23:38:31 · answer #4 · answered by clouds 4 · 0⤊ 1⤋
yes
2006-10-24 01:15:10 · answer #5 · answered by Intersect 4 · 0⤊ 0⤋
yes they do! they have strong tail fins to help them shoot out of the water
2006-10-23 22:38:56 · answer #6 · answered by zach 1 · 0⤊ 1⤋
well you essensually answered your own question, yes they REALLY do all those things, just to spawn, and later their children make the same trip.. very neat fish
2006-10-23 22:23:00 · answer #7 · answered by Ehh Blinkin 3 · 0⤊ 1⤋
yes they do to mate or spawn
2006-10-27 09:24:35 · answer #8 · answered by Anonymous · 0⤊ 0⤋
yes they do it, but the only reason is because it is their mating season
2006-10-23 22:58:27 · answer #9 · answered by Mike J 1 · 0⤊ 1⤋
Of course they do!
2006-10-27 16:42:38 · answer #10 · answered by elliejay21 2 · 0⤊ 0⤋