Track fish across the ocean

摘要

Birds, turtles and seals have all had their private lives pried into using GPS tags; now fish are getting the same Big Brother treatment.rnUntil now it has been difficult to track fish with any accuracy. Large fish like tuna have been tracked before, but only with tags that communicate with Argos environmental monitoring satellites, which are accurate to a couple of hundred metres at best. Traditional GPS tags narrow the range to tens of metres, but are slow to get a satellite fix, a problem in tough ocean conditions and when an animal surfaces only briefly.