A labeled anatomical diagram of a tuna rendered in bold black lines and sections against a bright coral pink ground, with Japanese characters and English labels identifying each cut and part of the fish. The composition centers the fish in profile with a direct, instructional approach, accented by stark black text at the base reading "マグロの解剖学 TUNA ANATOMY" in strong capital lettering. Printed to order on a soft, absorbent mat with a no-slip backing, ready underfoot the moment you step out. The kind of art you don't expect on a bathroom floor.