Complex sentence: Lophogastrida is an order of malacostracan crustaceans in the superorder Peracarida, shrimp-like animals that mostly inhabit the relatively deep pelagic waters of the oceans throughout the world.
Split into simpler sentences: Lophogastrida is an order of malacostracan crustaceans in the superorder Peracarida. They are shrimp-like animals that mostly inhabit the relatively deep pelagic waters of the oceans throughout the world.