black line isn’t a mysterious toxin. It’s part of the shrimp’s digestive system, and removing it is mostly a matter of preference.
The Bottom Line
The next time you see a dark line running down the back of a shrimp, don’t panic.
It’s the shrimp’s digestive tract—not a dangerous “vein.”
You can remove it before cooking if you prefer, but safe storage, proper handling, and thorough cooking are far more important when it comes to enjoying shrimp safely.
Do you usually devein your shrimp, or do you cook them as they are?
