Shark Week starts; here are some interesting facts about sharks that may surprise you

Sharks are fascinating creatures that have roamed the world's oceans for millions of years. As Aquaman, Jason Momoa hosts Discovery's 'Shark Week', here are some interesting facts about one of the most fascinating creatures on our planet.

Sharks, one of the oldest vertebrate species on Earth, have been present in the world's oceans for around 450 million years.There is a remarkable diversity among sharks, with over 500 known species, ranging from the dwarf lantern shark, measuring around 7 inches, to the colossal whale shark, reaching up to 40 feet or more in length.Sharks possess cartilaginous skeletons, making them lighter and more flexible than bone-based creatures.Their extraordinary sense of smell allows some shark species to detect a tiny drop of blood in the water from considerable distances. Read more on economictimes.indiatimes.com