This fun creation from Osamu Kasho of the Karakuri Creation Group has a secret hidden compartment.
The Whale Type-I is an easy puzzle box to open and a re-make of an original design from 2017. Slightly larger than the original it features a simple mechanism but it is nice to appreciate how it works.
Made from Walnut and Mizuki it measures 113 x 69 x 50mm with an internal storage are of 34 x 16 x 20mm.
The solution is included.