Salmon's Adaptation
If you were confined to a watery domain you would have some adaptations similar to the salmon. For one, you would most certainly have a more streamlined body like the salmon. This crucial adaptation allows you to glide smoothly and effectively though the water, conserving valuable energy. Even the very mechanisms that would propel you through the water are adapted for low drag. The second adaptation you would have to acquire to be more like the great salmon is rugged fins. The salmon’s fins are not only built for endurance,but for the necessary bursts of speed to attack its prey when the time is just right. These quick bursts are primarily derived from the fish’s utilization of its oversized tail fin. And when it comes to feeding,the salmon doesn't bother too much with the whole chewing idea. This adaptation also conserves energy. The salmon has a single row of small razor sharp teeth that keeps the pray in until fully swallowed.
Probably the most useful adaptation that is shared by almost all of the fish is the evolution of the lateral line. The lateral line system utilized by fish is a long sensory organ made up of numerous sensory hair cells that pick up the slightest vibrations in the surrounding water. This system is very important in detecting prey and avoiding predators. Imagine combining touch, sight, and hearing into one sense and you can maybe imagine what it would be like to have said lateral line.