Ocean Life

1234567
Across
  1. 2. A large baleen whale known for its complex songs and breaching behavior
  2. 5. Microscopic marine algae that form the base of the aquatic food web
  3. 6. The production and emission of light by a living organism
  4. 7. An animal lacking a backbone such as a jellyfish or a starfish
Down
  1. 1. A member of the molluscan class including squids octopuses and cuttlefish
  2. 3. The deep-sea floor where sunlight does not penetrate and pressure is high
  3. 4. An underwater ecosystem characterized by reef-building corals