Use 30 rectangle (1:2) sheets of origami paper.
Difficulty : ⭐⭐⭐
Time: 2 hours
Blue color as water with fish camouflaged.
I think harmony paper will give interesting result.
Use removable tape to help assemble.
Model paper size:
Unit (blue) : 3.75 cm x 7.5 cm
Model height: ~7.5 cm
PrwOrigami - Kusudama Collection