Snom is a small, larval Pokémon. Most of its round white body is covered by a translucent shell of icy spikes. Its exposed head features two black eyes and round mouthparts. Four short legs are located underneath its body.
Snom anchors itself to branches with frigid thread it extrudes from its mouth to disguise itself as an icicle while sleeping. Snom consumes snow that has piled up on the ground. The more snow it consumes, the larger and more impressive the spikes on its back grow.
Snom may be based on a jewel caterpillar. Snom may also draw some inspiration from the larvae of the Gynaephora genus of alpine or Arctic moths. One particular species, the arctic woolly bear moth, can enter a dormant state that allows it to endure temperatures as low as -158 degrees Fahrenheit.
Snom may be a combination of snow, worm, and nom (slang for eating).
Yukihami may be a combination of 雪 yuki (snow) and 食み hami (eating).