Because the TIGER SHARK is used to eating fish and when it eats plastic bags, cans and so on it does harm to there bodies. With oil spills Tiger sharks can get stuck in the middle of them and will eventually die! that is what effects the sharks with pollution! :)
sharks, bad storms, boats and pollution can kill manatees. these are only some of the things that can kill them.
sharks and we hurt them because they get trapped in tuna nets;[ also pollution
no they do not eat sharks because a shark is to big for them to eat but they can kill sharks
Pollution affects hammerhead sharks in a negative way. Oil spills and fishing nets have greatly affected the sharks, putting them near an endangered species list.
No they do not.
No, sharks kill more.
no.
No.
yes great white sharks eat other sharks
Any type of sharks.
Dolphins are known to defend themselves against sharks and have been observed to chase them away in the wild. In some cases, dolphins have been known to injure or even kill sharks in self-defense or during competition for food. It is not common for dolphins to actively seek out and kill sharks as their primary source of food.
Sharks aren't normally prey, but things that will kill a shark are humans and other sharks.