The silky shark (Carcharhinus falciformis) has a perfectly streamlined body and is a perfect swimmer. The peculiarity of this shark is that its skin has the softest placoid scales, which is why the shark got the name "silky". This shark species owes its name to smooth skin. It is also called sickle or reef shark.
The Spottail shark, or sorrah shark (Carcharhinus sorrah), is one of the genus species of gray sharks. A common species of shark that lives between 31 ° N. and 31 ° S on the continental and island shelves close to the coast at a depth of 140 m. It prefers a sandy bottom but also occurs near coral reefs.