In general, there are some transparent things inside the squid stomach, these substances are somewhat squid eggs, does not contain harmful substances, is edible, will not cause discomfort. Let's look at it specifically below!

It's the squid's bone, a thin flat transparent nerve fiber

I think you're talking about the 2 transparent threads on the dorsal side of the squid's interior. Those are the 2 thick nerve fibers of the squid. It is connected to the nerve nodes in the head.

Fresh squid has elastic nerve fibers, if anything, dried squid has nerve fibers that are like plastic when they are sprouted up through lye.

Squid inside the white plastic can eat

We have seen the squid know, each squid stomach surprisingly have a transparent shape similar to plastic film things, they are basically the same shape, and from the head to the tail of the long, it is easy to be yanked out, this is what it is?

This is not a plastic sheet, this is the squid's bony inner shell, is cartilage. It's the cartilage that gives the squid its relatively fixed shape, and is an important part of the squid's ability to maintain its size and posture!

Of course, this plastic piece of cartilage is not edible.

The white transparent jelly inside the squid is injected with glue

The Internet has "injected with glue shrimp" and "injected with glue crab" and other statements in circulation. The people suspected that the gelatinous inside of the squid is injected with gelatine. This is impossible.

Gel injected into the shrimp and crab, etc. will be due to the shrimp body itself does not have a gap and overflow, water injected crab will also be from the pinhole out of the black secretion. The most important thing is that live shrimp, live crab water or glue injection within a few minutes will die, you see is the value of live or dead value, business why do this kind of money-losing business. Said what shrimp, crab glue are not right, there is no such thing. The "glue shrimp" and "glue crab" is a complete rumor.