difference between prawns and shrimps

tring to work out what a scampi was (variously described as a norwegian lobster, or dublin bay prawn amongst others on the web) got me thinking that I couldn’t tell the difference between a prawn or a shrimp in the supermarket. OK prawns tend to be bigger, but is there an obvious physical difference between say a small prawn and a large shrimp, or is it just marketing naming?

They are the same creature.

There are any number of different species of crustacean sold and served as shrimps/prawns; the terminology is rather varied depending on where you live, but ‘prawns’ are typically not just one thing, neither are ‘shrimps’ - they tend to be categories, not items.

In the UK, ‘shrimps’ are very small (less than half an inch long) and are not often seen any more, ‘prawns’ are bigger (say, between half an inch and one-and-a-half) and ‘king prawns’ are larger still - typically served whole and peeled eaten with the fingers.

If it talks, it’s a king prawn.

Difference between shrimp and prawns is roughly three bucks a pound.

“Prawns” just sounds fancier than “shrimp” so it’s largely a marketing ploy.

I’ve heard tell that Sir Gerald Nabardo has a pet prawn called Simon.

I guessed as much. Tx for the replies

Hold on !

To put it correctly, all prawns are shrimp but not all shrimp are prawns.

From the Pacific Fishery Regulations, 1993 of Canada

Like the chili at Wendy’s?