Shrimp turns opaque instead of translucent
Shrimp changes from gray to pink or orange
Shrimp curls into a loose C shape
Shrimp feels firm to the touch
Shrimp reaches an internal temperature of 145°F
Shrimp is no longer glossy and raw-looking
Shrimp cooks quickly, usually in 2 to 4 minutes depending on size
Shrimp becomes slightly springy, not mushy
Shrimp is done when the flesh is white throughout
Shrimp is overcooked if it curls tightly into an O shape