Wonders of the sea!

123456789
Across
  1. 2. Materials avaliable from the environment.
  2. 4. When something goes missing or doesn't exist anymore.
  3. 6. The _______ zone is the deepest zone in the ocean. No light comes here.
  4. 8. A living animal in the sea.
  5. 9. The middle layer of the sea is called the _________ zone.
Down
  1. 1. Things that are bad for the environment.
  2. 3. The largest mammal in the sea
  3. 5. The top zone of the sea. Most creatures live here.
  4. 7. I live in the sunlight zone. I have a shell.