How big is a shark?
The biggest great white sharks can reach up to 20 feet long, but most are smaller. The average female is 15-16 feet long, while males reach 11-13 feet. More about the great white shark can be found in our great white shark overview.
Is a shark a fish Yes or no?
Sharks are fish. They live in water, and use their gills to filter oxygen from the water. Sharks are a special type of fish known because their body is made out of cartilage instead of bones like other fish.
Is Shark a mammal or a fish?
Unlike whales, sharks are not mammals but belong to a group of cartilaginous fishes.
Are shark teeth bones?
Well, like our teeth, shark teeth are made of a tissue called dentin (“dentine” for our British readers), which is calcified. And the dermal denticles (“skin teeth”) that sharks have instead of true scales are very toothlike and can fossilize. So no, sharks do not have bones. David Shiffman, Ph.
Do Megalodons still exist in 2020?
But could megalodon still exist? ‘No. It’s definitely not alive in the deep oceans, despite what the Discovery Channel has said in the past,’ notes Emma. The sharks would leave telltale bite marks on other large marine animals, and their huge teeth would continue littering the ocean floors in their tens of thousands.
What creature killed the Megalodon?
Competition from other predators of marine mammals, such as macropredatory sperm whales which appeared in the Miocene, and killer whales and great white sharks in the Pliocene, may have also contributed to the decline and extinction of megalodon.
What is the average lifespan of a Megalodon?
Some megalodons are estimated to have been much larger―as long as 50 feet. Using the data from this study, together with previous research, the researchers concluded that the potential lifespan of megalodons was 88-100 years.
Do sharks come close to shore?
“It’s no secret that white sharks are close to shore. It’s one thing to say that, but another to back it up,” said DMF shark researcher Greg Skomal, one of the co-authors of the study along with conservancy scientist Megan Winton and Arizona State researcher James Sulikowski.
Can a megalodon eat a cruise ship?
A: No way. That was be absolutely impossible and goes against everything we know about megalodons based on the fossil record. For starters, megalodons were found around the world, but only in warm coastal waters. They just aren’t adapted for deep ocean living.