ocean

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Across
  1. 1. Large, multicellular algae that grow in marine environments.
  2. 3. A small boat with sails that is powered by the wind.
  3. 5. The swells or ridges formed on the surface of the ocean by wind or tides.
  4. 7. A tall tower with a bright light used to guide ships at sea.
  5. 9. The largest marine mammals that live in the ocean.
  6. 11. The sandy or pebbly shore along the edge of an ocean or sea.
  7. 12. Birds commonly found near the ocean, known for their squawking calls.
  8. 13. Intelligent marine mammals known for their playful behavior.
Down
  1. 1. Hard protective coverings of various marine animals found on the beach.
  2. 2. reef A ridge or mound formed by coral organisms in shallow, warm waters.
  3. 3. The hard outer coverings of marine mollusks found on the beach.
  4. 4. Aquatic animals with gills and fins that live in the water.
  5. 6. The rise and fall of the ocean's water caused by the gravitational pull of the moon and the sun.
  6. 8. A large body of saltwater that is smaller than an ocean.
  7. 10. The sport or activity of riding on the waves using a surfboard.