Shark Evolution

Shark Evolution

THE EARTH BEFORE THE SHARKS Fossil evidence shows that sharks populated the planet before the dinosaurs existed, that is, more than 400 million years ago. Since the skeleton of the shark is composed of cartilage, the only thing preserved from prehistoric sharks are...
Shark Social Structure

Shark Social Structure

Social Structure of Sharks There isn’t much or reliable information about the social structures of sharks, given the complexity of studying their individual interactions and behavior. However, in recent years the relationships between fish once considered simple...
Shark Tails

Shark Tails

Shark Tails – Depending on the species Each shark has a tail adapted to its physiology, its surroundings, and its lifestyle; Therefore, there is a great diversity of types of tails. Each one consists of a precaudal pit and an upper and lower lobe. In some cases,...
Shark Anatomy

Shark Anatomy

Shark Physical Characteristics There are more than 400 shark species in the ocean, but they all have the same basic anatomy. This astonishing anatomy masterfully designed by evolution is what sets sharks apart from other types of aquatic life including whales and...
Shark Communication

Shark Communication

Communication between animals is an issue still on research especially because of the imprecise meaning of the word “communication” in this context. But in short, it is true that some animal species use their intelligence and senses to warn, prevent and...
Shark Distribution

Shark Distribution

Sharks Around the world Talking about the distribution of sharks is simple. These animals are present in all the oceans of the planet and all the seas. They usually live in salt water, but some species inhabit temporarily freshwater lakes or rivers, such as the bull...