Hello, this is Wild Suzhou.
Today, we will be talking about great white sharks. Are they really as dangerous as humans make them out to be, or do they just have a bad reputation?
Great white sharks are one of the larger species of sharks, from the mackerel shark family. Mackerel sharks got their name from their diet, which consists mainly of fish such as mackerel.
Great whites have a type of camouflage known as countershading, where their backs are grey and their undersides are white, meaning animals from above will not see them since their backs blend in with the depths of the water, while animals looking up will see what looks like sunlight. Great whites have multiple rows of jagged teeth, so when one tooth breaks off, another tooth will replace it. These serrated teeth help the shark to hunt since the teeth latch on easily and can tear off flesh for the shark to eat. They also have large blue eyes.
Great white sharks are carnivores, mainly eating fish. However, their diet is very broad, and they can also eat dolphins, whales, seals, turtles, birds, and otters. They will also eat other sharks. In California, great white sharks will hunt northern elephant seals by biting them on the hindquarters, or around the midsection of their tail. This immobilizes the seal, and it will also eventually bleed to death. Sharks will also hunt dolphins and porpoises by sneaking up on them from above, below, or behind so that a dolphin’s echolocation will not give away the shark’s position.
Great white sharks are responsible for the most unprovoked attacks on humans. However, they don’t intentionally hurt humans unless humans attack them. Great whites will also do something called “test biting” where they will bite an object to figure out what it is. Sometimes, a shark and a human may be in water that is not clear or contaminated, making it harder for the shark to sense that a human is not a seal or some other preferable prey item. Usually, when a great white shark bites a human, they will quickly realize it’s too bony, meaning less proteins and fats for the shark to digest. Because of this, the human is not worth attacking and they will stop biting.
For Wild Suzhou, I’m Ciana, thanks for listening, and see you next time.