Your sentence is almost correct, but it can be improved slightly for better grammar and clarity. Here is the corrected version:
Original: With their claws, black bears grab salmon in shallow waters and drag it to the shore.
Corrected: Black bears use their claws to grab salmon in shallow water and drag them to the shore.
Explanation:
- We say "use their claws" to clearly show how they grab the salmon.
- "Shallow water" is usually singular when referring to the general area, so we don't need to say "waters."
- Since "salmon" is plural here (they catch more than one), we use "them" instead of "it." If you are talking about only one fish, "it" is fine.
So, the corrected sentence is clearer and grammatically correct!