Multiple choice general knowledge

Sunlight can penetrate clean ocean water to a depth of

  1. 120 feet

  2. 240 feet

  3. 220 feet

  4. 260 feet

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

Sunlight can penetrate clear ocean water to approximately 240 feet (about 73 meters). Below this depth, there is insufficient light for photosynthesis. This zone is called the photic zone or euphotic zone.