In the frame
A whale shark covered in white spots and pale stripes swims just below the surface, with a group of small yellow-striped fish leading the way in front of its mouth. Sun rays slant down through turquoise water.
This dive turns the picture into a 5 × 5 slide puzzle: 24 tiles and one empty space. The shuffle is fixed, so everyone starts from the same board, and it is always solvable.
Dive plan
- Start with the easy part: the whale shark's spots and the yellow fish.
- Save for last: the turquoise water and the hazy sand below. About 66% of the frame has little detail, mostly in the bottom third, and those pieces look alike.
- Finish the top row first, then the left column; the puzzle shrinks to a smaller board each time.
- Switch on the numbers if two tiles look alike — they show where each tile belongs.
- Look-alike tiles are where the numbers help most: plain water or sand gives few clues about order.
- A 5 × 5 board is a real workout; if you get stuck, the hint suggests a move or highlights a misplaced tile.
Colours of the picture
Main colours, measured from the picture's pixels: teal (62%), turquoise (26%) and slate grey (12%).
- teal62%
- turquoise26%
- slate grey12%
How deep it goes
Depth 4 of 5 — a demanding dive.
Deep dives are the longest in the logbook: the largest board each game gets in the numbered dives.