Different subjects: Octopus belongs to mollusca, Cephalopoda and Octopoda, while squid belongs to mollusca, Cephalopoda and Squid. Different shapes: Octopus and squid also have different shapes. Octopus has 8 brachiopods and squid has 10 brachiopods. Habits are different: Octopus likes to eat some crustacean food, or shrimp and crab food. Squid likes to eat some plankton and small fish. 1. What's the difference between squid and octopus 1? Different subjects: Octopus and squid are different in species. Although both belong to mollusca and Cephalopoda, octopus belongs to Octopus, while squid belongs to Squid.

2. Different shapes: Both octopus and squid belong to mollusks, and both have brachiopods, which look very similar. But as long as you look closely, you can still find the difference. For example, an octopus has eight brachiopods and can contract freely. Squid has 10 brachiopods, and both sides are symmetrical. But two of them have shorter wrists, and the other eight will be longer.

3. Different habits: Octopus and squid have different habits. Octopus mainly eats crustaceans, such as shrimp, crab and shells. Squid can eat many kinds of food, besides crustaceans, it can also eat some mollusks or small fish. In addition, octopus's IQ is high, and the way of thinking will be more complicated.

Second, what is the difference between octopus and squid 1, different shapes: octopus is also called octopus, they are soft and have no bones. Squid's body is flat, there is a cartilage in the body, the tail is triangular, and the overall shape is like a tube.

2. Different habits: Octopus likes to grow in a dark environment, and they rely on suckers to crawl. Squids are fast-swimming, and they like to grow in bright environment.