These cold-blooded animals exhibit a unique curiosity toward humans. Here’s a look at the most aggressive shark species that pose a threat. The great white shark (Carcharodon carcharias ...

Number of species ... a dusky shark (Carcharhinus obscurus). Largest egg in the world: An egg case of the whale shark found in the Gulf of Mexico measured 12 by 5.5 by 3.5 inches. Most travelled ...

Depending on species and diet, over its entire lifetime a shark can produce between 20,000 and 40,000 teeth. This means that there is a much greater chance that a shark tooth will be preserved and ...

This shark has 38 known species across the globe and shares characteristics of both sharks and rays. The guitar shark family is among the top 10 most threatened vertebrate groups and two-thirds ...

This summer, we’re looking at three shark species with notorious reputations ... turns to face you that you understand why it’s the most feared animal on Earth. From the front its head ...

The movements of most shark species are fairly predictable, he says. “They’ll go one place during the day, and one place at night. But for the most part we don’t see that with tiger sharks.

This shark has 38 known species across the globe and shares characteristics of both sharks and rays. The guitar shark family is among the top 10 most threatened vertebrate groups and two-thirds ...

The angel shark does not want to ... army of people to track them. But the most promising place for deploying eDNA may be Earth’s oceans, where many species remain unknown and many threats ...

Over 800 marine species ... shark at 200-meter depths off Africa's Mozambique and Tanzania. With 38 known species, these sharks, blending features of sharks and rays, are among the top 10 most ...