5/8" x 2", silver, brass. Use the bead at the bottom to help the fish cavort in the waves.
I like jewelry that moves, have a thing for automata (things with mechanisms, like a guy doffing his hat when you turn the crank), keep coming back to little scenes like this - and boxes, love little boxes. I look forward to doing a bit of a study on these.
This particular one went absolutely awry at every turn but taught me much.