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Many people have a narrow idea of what sharks are and their relevance on the planet. Most equate sharks with a movie in which a Great White is cruising beaches for unsuspecting bathers in the middle of the night. This is a very unfair depiction of one of the most majestic creatures on the planet.

For over four hundred million years these creatures have been inhabitants of earth. The things that we, as humans, can learn from this fish could play a major role in our continuing survival and health. The characteristics shared by the entire species of shark is a marvelous study in survival and fitness.

Most people don’t realize that a shark cannot swim backwards. Their entire body is built for forward motion and their tails are designed to provide them with the momentum they need to catch or corral the food that they eat.

The size of these fish varies greatly, they can be found as small as seven inches long and as large as thirty-nine feet. The skin of the shark is composed on dermal denticles. This is not related to the scales that other fish have, but is more like a corset that is flexible and acts like an outer skeleton. The skin is very tough and has been used for sandpaper and leather in commercial industries.

There are no bones in a shark. Their entire body is made up of cartilage and connective tissue. This allows them to move with more fluidity and make sudden turns and bends with no effort at all. These fish do not swim in water as much as they glide through it with perfect control of their movements.

There are only a few sharks that jump from the water. The Great White and Mako, are both considered dangerous to humans but do not “hunt” humans. When at sea they often jump from the water to catch birds flying close to the surface. There are several types of shark on the endangered species list because they are hunted for meat, skin, and sport without regard to their survival.

Shark migration has long intrigued Andries Joubert while watching sharks along the East Coast of Southern Africa.