A hungry shark that tried to gulp down a spiny porcupine fish suffocated on its supper.
Feared by most, loved by some and hunted by many, sharks are one of the most mysterious groups of creatures roaming the Earth today. Defined as a fish with a full cartilaginous skeleton and a sleek, streamlined body, a shark can range in size from the two foot pygmy shark, to the colossal 50-foot whale shark.There are more than 250 different species of sharks currently identified, making it one of the most diverse animal genera on the planet. Sharks are found in every major body of saltwater in the world, but are more common in warmer waters. There are a small number of shark species that do thrive in fresh water, and certain sharks have been known to venture from their saltwater homes to major freshwater lakes and rivers.Most members
Remarkably diverse communities of ocean life make their home in waters near Mexico's Revillagigedo Islands, now a protected marine reserve.
Mexico President Nieto designated a Pacific Ocean region teeming with biodiversity as a protected marine area.
The remoteness and weak law enforcement in Bahia San Blas, a major nursery for several shark species, has led to a significant loss of these sharks.
A glow-in-the-dark shark that has a mouthful of pointy teeth and an impressively large bulbous nose is also quite small — about the weight of a pineapple, according to a new study.
A nursery in the waters of New York is critical to the survival of the area's sand tiger sharks, and scientists are now tagging these and other species to learn more about their needs.
It may come as no surprise that Michael Phelps didn't zoom past a great white shark in a "Shark Week" event that aired last night (July 23), but he did manage to beat a reef shark.
It's hard to imagine how Olympic-gold-medal swimmer Michael Phelps could win in a race against a great white shark, but the Discovery Channel is giving him every advantage in the book.
As the Discovery Channel and National Geographic Wild unleash a week of dueling shark programs, a biologist advises viewers to take what they see with a large grain of sea salt.
Two separate sightings of majestic whale sharks have occurred in the past few weeks near Ocean City, Maryland.
Nearly a third of the world's largest ocean species may have died during what researchers are calling the Pliocene marine megafauna extinction, which occurred 2-3 million years ago.
The graceful whale swims by undulating its wide tail up and down, while the shark swims by moving its tail side to side. Why the difference?
A group of more than a dozen great white sharks were spotted swimming in the surf off a Southern California beach, but beachgoers shouldn't panic, say shark experts.
When three great white sharks mysteriously washed ashore along the coast of South Africa, researchers weren't sure what to think.
Fossilized bones riddled with enormous shark bite marks reveal the mega shark's main prey and why Megalodon went extinct.