To determine if a shrimp is terrible, first look at its appearance. A fresh shrimp will be translucent and whitish, and it should have a slimy texture and black spots. Additionally, a spoiled shrimp will have a smell and a foul taste, and it should also stick to your fingers. Try cooking it if you can’t determine whether a shrimp is sour by appearance. It would help if you stored it in the refrigerator until ready to use.
Fresh raw shrimp should have a shiny shell and a mild ocean smell.