What you need is an old Zebco 202 maybe 404 since it is the ocean and all. Just kidding my boy peskers me all the time thankfully there is a lake near by. He started "splitting the worm" at five.
My niece(13) and nephew(9) bug me all summer long to take them with my brother and I to catch bluegill and green sunfish (aka bait).
I would take them to the river but their mom won't allow that.
I like seeing them so into fishing, pretty soon they need to learn how to cast and retrieve a bass lure.