Do you understand that shrimps will become lobsters in the future? Not necessarily. Shrimp is actually generally the larva of green shrimp or bran shrimp, which is very small. And the young shrimp of lobster, no matter how small it is, you won't call it shrimp when you see it, because its abdomen is thicker, similar to its head and chest, and it is generally called shrimp instead of shrimp.

In a word, shrimp and lobster belong to different genera and cannot be confused.