As the Megalodon is an extinct species of shark, there is no present day contest!
megalodon
Liopleurodon
the megalodon. It can tear it up just like he tears up a whale.
Brygompheseter Because It Lived In Pods And Can Easily Kill A Megalodon.
No
shark
shark
blue whale u idiot
a sperm whale
The whale would win because it can just eat the box jellyfish. The box jellyfish's toxic is too small to damage the whale a little bit.
the shear size and strength of the killer whale would own the polar bear
Whale would eat the shark not grind it shark would eat insides shark wins whale loses