Meaning: This sentence describes the hunting behavior of seagulls, which involves flying high and then diving down to catch fish in the water.
Choice of Words: "Seagulls" are birds that live near the ocean. "Soar" means to fly high in the air. "Diving" means to move quickly downward. "Fish" are animals that live in the water. When you put them together, the sentence describes how seagulls fly high in the sky and then quickly dive down to catch fish in the ocean.