Assisgnment 3 : Fish

A fish is any member of a paraphyletic group of organisms that consist of all gill-bearing aquatic craniate animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish, as well as various extinct related groups.

When I was small , I alway wondering that why fish can swim happily in the water.
But ,actually based on some sciencetific studies show that fish only got 7 Seconds of memory.
This second they swim here but a few seconds later ,they dont where are they...

Though fish got only short memories but I have a chance ...I hope I can become a fish..because my
life will be easy and I can live happily without any stress....