Q. Consider the following observations regarding the Coral Reefs:
  1. Coral reefs are more common in Pacific Ocean in comparison to Atlantic Ocean
  2. Largest coral reef of the world is located in Pacific Ocean
  3. Coral reefs are among the zones of highest marine biodiversity on Earth
Which among the above observations is / are correct?

Answer: 1, 2 & 3
Notes:
  1. Statement 1: Coral reefs are more common in Pacific Ocean in comparison to Atlantic Ocean.: This statement is correct. Nearly 75% of all coral reefs are found in the tropical waters of the Pacific Ocean, compared to 18% occurring in the Indian and Atlantic Oceans. Reasons include higher sea temperatures and expansive shallow ocean floors.
  2. Statement 2: Largest coral reef of the world is located in Pacific Ocean: This statement is correct. The largest coral reef is actually the Great Barrier Reef located in the Coral Sea off the coast of Queensland, Australia in the Pacific Ocean.
  3. Statement 3: Coral reefs are among the zones of highest marine biodiversity on Earth: This statement is also correct. Coral reef ecosystems show exceptional diversity of marine species even though they cover less than 1% of the ocean floor. They rival tropical rainforests in terms of biodiversity.