The natural enemies of the octopus are sperm whales, moray eels, and sharks. The octopus's main attack is to spray ink, but also able to change their body color like the most flexible chameleon, camouflaged and then suddenly pounced on the prey, the general prey simply do not have the time to react, only a short second, the octopus can complete the predation process.

1, sperm whale

Sperm whales after a long historical process, slowly formed a protective color, the sperm whale's back is dark gray, there are also dark black, which is more conducive to the sperm whale foraging, sperm whale's staple food is octopus, squid, and a variety of fish, sperm whales are particularly large, the natural appetite is also very good, adult sperm whales like to eat giant octopuses, there are Reports indicate that once in the stomach of a sperm whale found a still intact, 12 meters long, weighing 200 kilograms of giant octopus, giant octopus will also cause harm to the sperm whale, the octopus's main mode of attack is to use the suction cups to entangle the prey, in the sperm whale's mouth and the body sometimes similar to be scratched scratches and round suction cups marks, that is, and giant octopus fights left behind the scars.

2, moray eels

Marine eels are widely distributed in eastern Africa, the Indian Ocean and the Northwest Pacific Ocean, to the ocean octopus, squid for food, moray eels swim very fast, the night set out to hunt for food, inhabiting in the mud holes in the 50 ~ 80 meters of the underwater, the moray eel's attack is very special, like to lurk up to sneak up on the enemy, often in the sea waves come out to look for food in the evening and the early morning! Octopus activity is a little more frequent, so the sea lamprey hunting time is also mostly concentrated in the evening and early morning.

3, shark

Sharks are also the dominant force in the ocean, but also to the ocean mammals for food, octopus, squid and other marine life, but also the main object of sharks prey, but some sharks can keep a long time do not eat, a full meal, you can adhere to a month or two do not hunt. Sharks are more active, swim fast, usually like to live in the deep sea, occasionally foraging for food when surfacing.