Shark Facts 4 Distinctive Shark Features For Enthusiasts

1. Shark Facts: 4 Distinctive Shark Features For Enthusiasts Did you know the fossils of sharks date back to approximately 450 million years ago? It’s true; sharks have been dwelling in the aquatic world for millions of years. You would be surprised to know many shark species known today to humans emerged only 200 million years ago. In other words, sharks were one of those prehistoric creatures who survived the mass extinction responsible for putting an end to the era of dinosaurs. Today, we are sharing some distinctive physical features that make shark species unique from other aquatic animals. Dermal denticles Its true sharks are known for their strong jaws and countless teeth, but that’s not the only distinctive feature that separates them from other fishes. Dermal denticles are small sharp-teeth looking scales on sharks’ skin. This skin tooth makes it easier for them to stealthy hunt for their prey by reducing the drag underwater. Cartilaginous skeleton Perhaps the biggest reason why “where can I buy shark teeth” is the most common search on the Internet by fossil collectors is that sharks have cartilaginous skeletons. Unlike other fishes with bony skeletons, the entire skeleton of sharks is made out of cartilage. Though cartilage is a muscular connective tissue that helps sharks to swim quickly without much effort and energy, it cannot survive fossilization like bones. That’s the reason why early records of shark fossils are poor, and scientists only have shark teeth and present-day’s shark species to figure out how early sharks looked like. Oily liver Unlike fishes with bladders, sharks stay buoyant with their oily liver, making up 25% of the body weight. Shark’s liver stores fats and helps them migrate long distances. Despite the large liver filled with oil,

2. sharks can float easily. As a matter of fact, sharks with more fat stay afloat more efficiently because of more buoyancy. Gill slits It’s not a new thing to say that fishes, including sharks, have gills for respiration. But unlike fishes with only a single opening on each side of their body, sharks have up to seven grill slits. Somes sharks get oxygen to the grills using ram ventilation. They rapidly swim while keeping their mouth open to allow water to flow through. Some bottom-dweller sharks, on the other hand, have openings - known as spiracles, behind their eyes to pull the water in and flow through the grills. These were some fascinating facts about sharks’ distinctive physical characteristics. So if you are about to look “where can I buy shark teeth” on the Internet to begin your shark tooth collection, we suggest buying them from an authentic dealer.