Tag technology has helped unlock the mysteries of the journey undertaken by juvenile salmon in the North-West United States.
A team of researchers fitted the novel devices to 1,000 of the young fish and tracked their progress from the Rockies through the Pacific to Alaska.
The study was part of a 10-year global project called Census of Marine Life.
It wouldnt have been anything new if we used it before however it is the first time the technology has been used on juveniles, otherwise known as smolt.
It has been difficult to know everythign about this small fish which is so important for all world but Jiim Bloger director of the PAcifif Ocean says:thanks to new sound-emitting tags, about the size of an almond, combined within an extensive coastal network of underwater detectors from Alaska to California, several mysteries of fish migration may soon start to unravel."
The recults about the migrations this fish which migrate between fresh water and saltwater no only can be useful for understand their life but also for protection.But the researchers added that the tagging technology had proved to be a valuable tool in terms of gaining a clearer picture on what was happening under the water.
MOre in BBC Wednesday, 29 October 2008r.
