lobster pot 
noun
A basket-like trap in which lobsters are caught.Your dad caught it in a lobster pot he found on one of his famous forays on the beach....
- Of course, as we hadn't caught one, I had insisted this be carried over, especially as Paul had had so much fun playing the lobster pot I picked up the rod while Davy fitted me up with the fighting harness.
- A seahorse clings to a lobster pot at Lynch's Reef, Kaikoura