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Coral Reef Mystery Mosaic color by number

Mystery mosaic20 colours830 squares

A mystery mosaic: colour each numbered square with its matching colour from the key, and the coral reef picture appears as you go. Print it free, or colour by number online.

Coral Reef Mystery Mosaic: a hard color by number printable with 20 numbered colours and a colour key
Color online

Print or download

Paper size
Download PDFPNG

The PDF has two pages: the numbered picture and the colour key.

Colour key

  1. 1Salmon
  2. 2Black
  3. 3Slate
  4. 4White
  5. 5Plum
  6. 6Silver
  7. 7Teal
  8. 8Navy
  9. 9Lilac
  10. 10Beige
  11. 11Orange
  12. 12Red
  13. 13Denim
  14. 14Taupe
  15. 15Tan
  16. 16Turquoise
  17. 17Crimson
  18. 18Charcoal
  19. 19Aqua
  20. 20Amber

Tips for this page

  1. Work in rows or by colour: finish every square of one number, then move on to the next.

  2. Coloured pencils with a sharp point keep the colour inside the small blocks.

  3. Print at 100% (actual size) so the numbers stay easy to read.

  4. Not sure what a block should look like? Tap Show the answer to peek at the finished picture.

More color by number

All color by number pages

Questions about this page

How hard is this coral reef mystery mosaic page?
It is a hard page with 20 colours and 830 numbered squares.
How do I print it?
Pick A4 or US Letter and download the PDF. It has the numbered page followed by the colour key. Print at 100% (actual size) for the numbers to stay easy to read.