There are over 500 species of shark living in waters around the world and the majority give birth to live young. The remainder are oviparous, meaning they lay eggs. Empty shark-egg cases occasionally ...

Sharks do not have bones. Sharks are elasmobranchs ... they are fish. Some sharks give birth by laying eggs, while others give birth to live young — these sharks are viviparous, just like ...

Researchers have developed uterine implants for sharks to help determine where and when they give birth. Researchers say the technology, known as birth-alert-tag, would help establish effective ...

The Thames estuary is known to be home to at least five different species of shark, including the Critically Endangered tope shark (or ‘soupfin’ shark) and starry smoothhound sharks. Tope and starry ...