Yes, they do migrate. Birds, animals, insects, and reptiles migrate. Organisms under water like fish too migrate. But why do they migrate? There is only one simple answer – migration is natural and universal within the animal kingdom.
There are many diverse reasons for migration. One of the major reasons is in search of food and water. African elephants are the best examples for the animals that migrate to find food. Some other animals migrate to shelter in a better weather. Animals also migrate for reproduction.
It is estimated that the tiny Arctic tern takes the longest migration to meet a distance of 71,000 kilometers annual round trip. Butterflies are tiny and beautiful. Monarch butterflies also make impressive migrations of almost 4800 kilometers for every year. Salmon fishes travel 3800 kilometers for reproduction between freshwater and seawater.