The Ocean
yes they do.
They evolved from small rodents called "Casidinanerphalls".
The first sharks like Stethacanthus evolved from 370-345 million years ago (Late Devonion to Late Carboniferous).
sharks have changed overtime. the reason species evolve is because they need to adapt to their environment. thts why there are different species of shsrks
Sharks are a type of fish. This is because fish are defined as being vertebrates with gills.
Yes, there were! In fact, sharks were around even beforethe dinosaurs!
No, a stingray is a fish not a amphibian. They live in the oceans saltwater and there are many different species of them.
Yes this is very likely. All it would take is a ecosystemal change that makes sharks and dolphins develop a form of mutualism. Over time they will evolve mutually together as their enviroments change and it is no great stretch to think that they will one day try to have sex and it will work.
Fish began to evolve during the Cambrian explosion around 530 million years ago. The evolution of early sharks took place in the Devonian period.
Nurse Sharks, Lemon sharks and Hammerhead Sharks
Tina Anton has written: 'Sharks, Sharks, Sharks' -- subject(s): Juvenile literature, Sharks 'Sharks, Sharks, Sharks (Real Reading)'
There are three species of sharks known to eat starfish. These sharks are the Nurse sharks, Horn sharks and Port Jackson sharks.