The teeth of tiger sharks are oblique and serrated to saw through flesh Shark teeth are embedded in the gums rather than directly affixed to the jaw, and are constantly replaced throughout life. Multiple rows …

Dec 7, 2025 · Shark, any of numerous species of cartilaginous fishes that make up the order Selachii (class Chondrichthyes). Most species have a tough skin that is dull gray in color and roughened by …

Facts about many sharks from the eight orders of sharks from the Shark Research Institute (SRI). SRI conducts and sponsors rigorous, peer-reviewed field research about sharks and uses science-based …

Nov 19, 2024 · Sharks are cartilaginous fish with diverse shapes, sizes, and diets, inhabiting all oceans and playing crucial roles in marine ecosystems.

Learn about the different types of sharks - where and how long they live, what they eat, are they fish or mammals, interesting facts, pictures, and more.

(a subclass of animals that also includes rays and skates), sharks have skeletons made of cartilage—the hard but flexible material that makes up human noses and ears. This is a defining …

The truth is that shark attacks against humans are extremely rare, and you're more likely to die from drowning or from being struck by lightning. This video shows some of the reasons for shark ...