Sand Tiger Sharks | SHARK ACADEMY

It has perhaps the most confusing name of any shark, and a mouthful of razor-sharp, pointy teeth! I’m Jonathan Bird, and this is Shark Academy! It’s known by many names: the Spotted Ragged Tooth shark, the Gray Nurse Shark, the Sand Tiger shark…but it’s not a Sand Shark, it’s not a Tiger shark, it’s not […]

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 […]


Next on jonathan Bird’s Blue World, Jonathan heads to Canada to search for Greenland sharks! Hi, I’m Jonathan Bird and welcome to my world! ( ♪ music ) We often think of sharks as creatures of the tropics, living in clear warm waters near coral reefs, or perhaps prowling the shallows near a beach. But […]

Shark Coloration | SHARK ACADEMY

Do sharks have camouflage? Do they need camouflage? I’m Jonathan Bird and this is Shark Academy! Most people, when they imagine a shark, think of something like this: a reef shark, with the classic sharky look. Almost all sharks of this type are grayish with a darker top and lighter underside. This is called countershading. […]

Philippines Thresher Sharks | JONATHAN BIRD’S BLUE WORLD

Coming up next on Jonathan Bird’s Blue World, Jonathan goes deep in search of Thresher sharks! There are many tall tails in the ocean, and not all of them are true. But when it comes to sharks, there is only one truly tall tail. And that’s the tail on the Thresher shark, one of the […]

Great White Sharks | SHARK ACADEMY

It’s the animal we know as JAWS, and has quite a reputation for attacking people. I’m Jonathan Bird and this is shark academy! This is the Great White Shark. The Great White Shark! Not to be confused with the wimpy White Shark, or the Mediocre White Shark, which are two distinct sub-species of the Great […]


The Tiger shark: one of the world’s most feared and dangerous sharks. It patrols the shallows of tropical oceans looking for a meal. But what would it be like to dive with a Tiger shark? How will it react to a diver? I’m going to investigate Tiger sharks━and I’m going to do it without a […]


Hi, I’m Jonathan Bird and welcome to my world! The Blue shark. Implicated in attacks on shipwreck victims, and known to possess a mouthful of razor-sharp teeth. This vicious-looking fish has a few surprises in store for me as I prepare to leave the protected shore of Rhode Island and venture into the realm of […]

Scalloped Hammerhead Sharks | SHARK ACADEMY

It looks mean and it travels in big groups, but it’s actually a scaredy cat. I’m Jonathan Bird and this is Shark Academy! Hammerheads are very easy to identify because of that big, hammer-like head. Of course there are multiple species. The Scalloped Hammerhead has a particular shape that makes it easy to identify, but […]


In the Galapagos Islands, during certain times of the year, large aggregations of Scalloped Hammerheads come together to circle around Darwin Island. Scalloped Hammerheads normally live in the open ocean, but here at Darwin Island they come close to shore in large numbers. Considering the vast numbers of fish here, it would be logical to […]