Sculptures under the sea

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Across
  1. 1. work of art that is a solid figure or object made by carving or shaping wood, stone, clay, metal, etc.
  2. 3. a person who makes sculptures
  3. 5. the sport or activity of diving into water with your head and arms first
  4. 7. grey powder made by burning clay and lime that sets hard when it is mixed with water.
Down
  1. 2. the process of making air, water, soil, etc. dirty; the state of being dirty
  2. 4. a person who rides a bicycle
  3. 5. physical harm caused to something which makes it less attractive, useful or valuable
  4. 6. to increase in size, number, strength or quality