1. Octopus and squid are not the same animal.

2. Octopus aliases_, Zhangju ("Han Changli Collection"), long Zhang, short-legged Zhang, Luo Hoof ("Donguibojian"), sitting octopus, stone sucking, watching the tide ( "Minzhonghai"), octopus, octopus, small octopus, octopus ("Dictionary of Zoology"), the scientific name is Octopus vulgaris, the English name is Octopus, the Japanese name is マダコ, they belong to the invertebrates, molluscs, Cephalopod, family Octopus (octopus), or octopus (shāo).

3. Cuttlefish, also known as cuttlefish and cuttlefish, is a marine cephalopod mollusc of the order Sepioidea and is closely related to octopus and squid. Modern squid appeared in the Miocene Epoch 21 million years ago, and their ancestors were belemnites. It is characterized by a thick calcareous inner shell (squid bone, cuttlefish bone or jellyfish, which can be used as medicine). There are about 350 species of squid, with body lengths ranging from 2.5 to 90 cm (1 to 35 cm). The largest king squid is more than 20 meters long. Cuttlefish are distributed in all oceans of the world, mainly living in shallow waters along the coasts of tropical and temperate zones, and often migrate to Deeper waters.