Complex sentence: Walking upon a beach one night when both sun and moon are visible, the Walrus and Carpenter come upon an offshore bed of oysters, four of whom they invite to join them; to the disapproval of the eldest oyster, many more follow them.
Split into simpler sentences: Walking upon a beach one night when both sun and moon are visible, the Walrus and Carpenter come upon an offshore bed of oysters, four of whom they invite to join them. To the disapproval of the eldest oyster, many more follow them.