It turns out that "fish wholesaler" and "toy designer" are not mutually exclusive professions: Kazuyoshi Watanabe, a Tokyo fish wholesaler, created this wooden tuna to teach people how to properly gut the fish.

The model comes with just about everything you need to get the job done—including a cutting board a long knife to do the cutting. The model itself is much like any other anatomical version you've probably seen—each piece comes apart and then stacks back together for easy storage.

Unfortunately, this fish is also wildly expensive—you could buy a hundred real fish for the price of this $288 fake—but if you're a purist, it might just be worth it. [Core77]