The deep ocean remains one of the least explored parts of our planet, hiding countless unique species that continue to surprise scientists. Unlike creatures living near the surface, many deep-sea animals have developed unusual features to survive in complete darkness, kness, extreme pressure, and freezing temperatures. One such example is the anglerfish, which uses a bioluminescent lure to attract its prey in the pitch-black depths. Another fascinating species is the giant squid,rarely seen by humans but known to grow to impressive lengths. Some deep-sea creatures, like certain jellyfish, glow in the dark through a chemical reaction in. These species play a crucial role in maintaining the ocean's delicate ecosystem. However, human activities like deep-sea mining and pollution threaten their existence. Scientists stress the importance of protecting these hidden worlds, as they could hold secrets that help us understand life on Earth and even develop new medicines.
What is the main idea of the passage?
Show answer & explanation
Correct answer: B
Explanation
The passage introduces the deep ocean as an unexplored area with unique species, highlighting examples like the anglerfish and giant squid. It emphasizes their crucial role in the ecosystem but notes they are threatened by human activities like deep-sea mining and pollution. The text concludes by stressing the importance of protecting these environments, aligning with option B.