Holds the shellfish I caught (6)
I believe the answer is:
claims
'holds' is the definition.
The definition and answer can be both acts as well as being plural nouns.
Perhaps they are linked in a way I don't understand?
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for claims that I've seen before include "Declares that one is the owner of something" , "Assertions of ownership" , "Requests or demands as one's own" , "Asserts as a fact" , "States firmly, insisting on truth" .)