What is the long black thing in shrimp?

The long black thing in shrimp is the intestinal tract, also known as the digestive tract or gut. It runs the length of the shrimp's body and contains the shrimp's waste.

Some people find the intestinal tract off-putting, while others don't mind it. It's perfectly safe to eat, but it can be removed if desired.

Here are some ways to remove the intestinal tract:

* Deveining: This is the most common method. You can use a sharp knife or a toothpick to carefully remove the vein from the back of the shrimp.

* Peeled: If you peel the shrimp, you'll automatically remove the intestinal tract as well.

Ultimately, whether or not you remove the intestinal tract is a matter of personal preference.