Complex sentence: The loops that are in the pontoon edges of the rubber duck are connected to the fence of the lake by 16 ropes that are designed to hold the rubber duck still without it floating away by the waves of the lake water.
Split into simpler sentences: The loops that are in the pontoon edges of the rubber duck are connected to the fence of the lake by 16 ropes. These 16 ropes can hold the rubber duck still without it floating away by the waves of the lake water.