Why Most Sand Tiger Sharks Die in the Womb

As humans, we tend to think of the womb as a nice, warm, safe place. But if you were a sand tiger shark, the womb might seem like the most dangerous place on the planet. I’m Anna Rothschild, and this is Gross Science. Sand tiger sharks are large sharks that live in warm and temperate […]

Shark Weapons

Here’s a question for you: if we have no written record to where a species may have been found over time, what sort of evidence can we look for in order to determine where it may have once lived? I bet “weaponry” wasn’t the first thing that came to mind, but, sure enough, that’s exactly […]

Shark Feeding Frenzies | SHARK ACADEMY

Does a chum in the water really drive sharks into feeding frenzies? I’m Jonathan Bird and this is Shark Academy! In the classic stereotypical feeding frenzy, sharks go insane when there is blood in the water, and the bite at everything around, even each other. However, I have been in the water with many kinds […]

Megalodon Sharks | SHARK ACADEMY

It’s the largest shark you’ve never seen, and it makes the Great White shark look like a shrimp…shark. I’m Jonathan Bird, and this is Shark Academy! This is a tooth from a Great White shark, but this is a tooth from a Megalodon shark, which makes the Great White shark look kind of wimpy. The […]


How good is a shark’s smell, and how important is it to the shark? I’m Jonathan Bird, and this is Shark Academy! Sharks have nostrils just like people. They’re called Nares or Nasal Cavities. But unlike the nostrils on a person, sharks can’t breath through theirs, they’re only for smelling. As you probably know, shark […]

Spiny Dogfish Shark | SHARK ACADEMY

It was once the most abundant shark species in the world, but now, sadly, it mostly ends up in “Fish & Chips.” I’m Jonathan Bird and this is Shark Academy. The Spiny Dogfish shark is a small, feisty little shark that schools in huge numbers, but unfortunately its stocks have declined 95% in recent years […]

Great White Shark tries to eat a seal

Great White Sharks. Beneath the water – live the world’s largest predatory fish. They grow up to 20 feet in length and weigh more than 2 thousand kilograms. There have been plenty of shark sightings off the Massachusetts coast this summer, but none quite like this. Nature at its best – with a shark eyeing […]

The Jersey Shore Shark Attack

The summer of 1916 was this beautiful innocent age and the Jersey Shore was the place to be at that time. Well, this well-educated charming young man Charles Vansant, the doctor’s son from Philadelphia, decides to take an early evening swim as soon as the family lands in Beach Haven. Come on, boy. NARRATOR: Vansant […]

Facts: The Sawfish (Carpenter Shark)

Sawfish or carpenter sharks are modified rays with a shark-like body. They belong to a group of cartilaginous fish called elasmobranchs that includes sharks, skates, and rays. Amazingly, they have evolved a long, saw-like snout edged with sharp teeth. This snout is called a rostrum and it can be used in a back and forth […]

Shark Reproduction | SHARK ACADEMY

Are they born from eggs or live born? Or both? How do sharks reproduce? I’m Jonathan Bird and this is shark academy! Unlike fish, which produce large amounts of eggs, most of which never reach maturity, sharks produce far fewer, but larger, offspring, and they have a much better chance of reaching adulthood. Sharks can […]