original: He tossed Jörmungandr into the great ocean that encircles Midgard.
simplifications: He tossed Jörmungandr into the ocean around Midgard. He threw Jörmungandr into the ocean around Midgard. Jörmungandr was thrown into the ocean that surrounded Midgard. He tossed Jörmungandr into the great ocean. The ocean surrounds Midgard. He threw Jörmungandr into the ocean surrounding Midgard. He threw Jörmungandr into the big ocean that is around Midgard. He threw Jormungandr into the ocean around Midgard. He threw Jörmungandr into the great ocean surrounding Midgard. He threw Jörmungandr into the ocean surrounding Midgard. He threw Jörmungandr into the great ocean that surrounds Midgard.