Minecraft wiki entry for Squid, associated text: Hitting a squid underwater causes them to rise approximately 1⁄3–1⁄2 block.
Squid cannot be damaged by attacking their arms.
Squid don't have a death animation.[4]
Squid and glow squid are the only mollusks in Minecraft.
Squid behave like some land mobs and attempt to ride a minecart.
Squid were the first passive mob to spawn at any light level, in water, and without grass.
The squid's idle sound is barely audible.
If a squid is out of the water, its arms swing more slowly as its oxygen meter goes down. When 15 seconds have passed, its arms stop swinging and the squid begins to suffocate.‌[Bedrock Edition only]
In-game squid have eight arms, but in real life they also have two long tentacles. The in-game squid is thus closer to an octopus.
In-game squid have a gaping, tooth-lined mouth but as passive mobs they're completely harmless. Real-life squid, like all cephalopods, have a beak instead of teeth.
Squid are not affected by the "Dinnerbone" and "Grumm" name tag easter egg.[5]