Squids and octopuses are both cephalopods, which means they have heads with eyes, beaks, and tentacles. However, there are some distinct differences between the two. Squids have a longer, more cylindrical body shape compared to octopuses, which have a more rounded body. Squids also have a special fin-like organ called a siphon, which octopuses do not have.
The most well-known difference between squids and octopuses is their tentacles. Squids typically have eight arms and two longer tentacles, while octopuses have eight shorter arms and no tentacles. The squid’s tentacles are useful for catching prey, while the octopus’s arms are better suited for grasping and manipulating objects. Squids also tend to move much faster than octopuses, using their fins and the siphon to propel themselves through the water.