Here's why:
* Diet: Most seals prefer fish, squid, and other marine animals.
* Size: Prawns are relatively small, and seals have large appetites. It would take a lot of prawns to satisfy their hunger.
* Location: Prawns are typically found in warmer waters, while many seals live in colder regions.
Exceptions: Some seals, like the harbor seal, have a more diverse diet and might include small crustaceans like prawns in their meals. However, it's not a common occurrence.
So, while seals might occasionally snack on a prawn, it's not a major part of their diet.