Multiple choice general knowledge

Sunlight can penetrate clean ocean water to a depth of 40 feet.

  1. True

  2. False

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sunlight can actually penetrate much deeper than 40 feet in clean ocean water - visibility can extend to 200+ feet in extremely clear conditions. The 40-foot figure underestimates reality. In crystal clear tropical waters, sunlight reaches much deeper, which is why coral reefs can grow at significant depths.