How many small creatures in the deep sea?

There are an estimated 10 million to 100 million species of small animals in the deep sea. This includes a wide range of creatures, such as jellyfish, comb jellies, sea stars, sea urchins, and worms. These animals are adapted to the extreme conditions of the deep sea, including high pressure, cold temperatures, and lack of light. They often have unique body structures and feeding mechanisms that allow them to survive in this environment.