Salmon make a hardcore journey upstream to their spawning grounds to reproduce, and it almost always ends with death. But some live to reproduce again, and more than once!

Some animals must migrate to reproduce. Pacific salmon migrate thousands of kilometres to spawn - an epic journey which ends in death. Biology - Ecosystems - Learning Points. Pacific salmon migrate thousands of miles to reproduce. Their...

Migration is nearly universal within the animal kingdom; Animals across the globe, from birds and mammals to reptiles and insects, migrate for a whole variety of different reasons. Resources on Earth fluctuate and change constantly. Warm...