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•  Honey Bees and the Architectural Wonders of Honeycombs
•  Amazing Architects: Termites
•  The Woodpecker
•  The Sonar System of Bats
•  Whales
•  The Design in The Gnat
•  Hunting Birds with Keen Eyesight
•  The Thread of the Spider
•  An Intelligent Plan by Animals: Camouflage
•  Hibernating Animals
•  Electrical Fish
•  Special Freezing System
•  An Interesting Camouflage Technique: Parrot Fish
•  Cuttlefish
•  Different Seeing Systems
•  Albatrosses
•  An Arduous Migration
•  Koalas
•  Hunting Ability in Constant Position
•  The Design In Bird Feathers
•  A Living Being Able to Walk On Water: Basilisk
•  Photosynthesis


An Arduous Migration

Pacific salmon have the exceptional characteristic of returning to the rivers in which they hatched to reproduce. Having spent part of their lives in the sea, these animals come back to fresh water to reproduce.

When they start their journey in early summer, the colour of the fish is bright red. At the end of their journey, however, their colour turns black. At the outset of their migration, they first draw near to the shore and try to reach rivers. They perseveringly strive to go back to their birthplace. They reach the place where they hatched by leaping over turbulent rivers, swimming upstream, surmounting waterfalls and dykes. At the end of this 3,500-4,000 km. journey, female salmon readily have eggs just as male salmons have sperm. Having reached the place where they hatched, female salmon lay around 3 to 5 thousand eggs as male salmon fertilise them. The fish suffer much damage as a result of this migration and hatching period. Females that lay eggs become exhausted; their tail fins are worn down and their skin starts to turn black. The same is true also for males. The river soon overflows with dead salmon. Yet another salmon generation is ready to hatch out and make the same journey.

How salmon complete such a journey, how they reach the sea after they hatch, and how they find their way are just some of the questions that remain to be answered. Although many suggestions are made, no definite solution has yet been reached. What is the power that makes salmon undertake a return of thousands of kilometres back to a place unknown to them? It is obvious that there is a superior Will ruling over and controlling all these living beings. It is Allah, the Sustainer of all the worlds.

Next : Koalas        


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