Dive into a quiet reef
Underwater scenes are full of colour that moves from bright to deep. Coral reefs bloom in pink and orange, tropical fish weave between seaweed, and rays of light fall from the surface into darker blue below. That gradient from top to bottom is a natural map for the whole puzzle and makes it easier to sort pieces by depth.
Start with the creatures: a turtle's shell, a striped fish or a curling octopus has clear patterns that are quick to match. Then build the reef, where textures of coral and shells help separate neighbouring pieces. The open water is softest, so compare light rays, bubbles and changes in shade. If two blue pieces look identical, try their shapes against the gap rather than hunting by colour alone.
Each image opens in the main drag puzzle game with a choice of piece counts, and your progress is saved in this browser. Open the mixer and add ocean waves for a fitting, peaceful background while you explore the reef.
Questions & answers
Why are the blue areas tricky?
Open water has subtle colour changes. Use bubbles, light rays and piece shapes as extra clues.
Is this puzzle free?
Yes. Every puzzle in the collection is free to play online.
Where is my progress stored?
In your browser on this device. Keep site data to continue later.