Farmer

Did you hear about the farmer that crossed a cow with an octopus to get a do-it-yourself milker?

tried that once, ended up with a bum steer

Herding cattle in the ocean won't be easy either.

good point hard ta find a saddle small enough for sea horses, could ride em bare back an use star fish for spurs though

Tried that years ago with a horse but the price of horseshoes put me out of business!