Final answer:
The midshipman fish has the special adaptation of producing light to survive in its dark habitat.
Step-by-step explanation:
The special adaptation of the midshipman for its dark habitat is its ability to produce light. The midshipman is a type of fish that lives in the deep, dark waters of the ocean. It has special light-producing organs called photophores that allow it to produce bioluminescent light. This light helps the midshipman attract prey or communicate with other members of its species. The ability to produce light is an important adaptation for survival in its dark habitat.