0x2397 (@0x2397) • Hey
0x2397 (@0x2397) • Hey
Publications
- *10 Facts About Sharks*
1. Sharks do not have bones. They are a special type of fish known as "elasmobranchs", which translates into fish made of cartilaginous tissues— the clear gristly stuff that your ears and nose tip are made of.
2. Most sharks have good eyesight. They can see well in dark lighted areas, have fantastic night vision, and can see colors.
3. Sharks have special electroreceptor organs called the ampullae of Lorenzini, which allow them to sense electromagnetic fields and temperature shifts in the ocean.
4. Shark skin feels exactly like sandpaper because it is made up of tiny teeth-like structures called placoid scales, also known as dermal denticles.
5. When you flip a shark upside down, they go into a trance-like state called tonic immobility.
6. Sharks have been around for a very long time. Based on fossil scales found in Australia and the United States, scientists hypothesize sharks first appeared in the ocean around 455 million years ago.
7. Scientists age sharks by counting the rings on their vertebrae. Band pairs are counted like rings on a tree and then scientists assign an age to the shark based on the count.
8. Sharks can swim at an average speed of 5 miles per hour, but some species can swim at speeds of up to 60 miles per hour.
9. The largest shark ever recorded was a whale shark measuring 41.5 feet.
10. Sharks have a sixth sense. They can detect electrical fields produced by prey animals.
- In a fight between a lion and tiger, who will win
- A fight between a lion and a tiger, who will actually win