Not really,but good question!
It depends on the shark, but I'd assume a large porpoise. However, many sharks can feed off a larger fish, such as a whale.
A squid can kill a shark. Depending upon the size of the squid, and the size of the shark, the squid can also eat the shark.
a shark
Porpoise or dolphin, shark, other fish. A lot would depend on where you are.
For the thrill of the kill. Illegal shark-fin fishing.
A tiger shark is the most likely to kill someone.
Tiger sharks grow larger, and a big one could kill a large bull shark.
platypus porpoise dolphin king crab jelly fish salmon carp roach narwhal shark lobster killer whale blue whale killer shark
Yes. It can kill any shark by its deadly venom.
no because a shark can bite!
A shark can kill both. A piranha may be fast and have lots of teeth, but so does a shark. And many sharks are cannibals, meaning they will eat their own kind.