The oceans on Earth are very deep. In fact, the deepest point is called the Challenger Deep in the Pacific Ocean’s Mariana Trench. It is 36,070 ft (10,994 meters) below the surface of the ocean. Now, that’s seriously deep.
I love to imagine what kinds of undiscovered creatures might live in those depths. Like this Bloop Blorp, for example. Why not ask your artists to draw an imaginary deep sea creature of their own!