Koopie Koo (Paper Mario TTYD)

Tritonia + Giant Slug - Monster Girl Encyclopedia (MGE)

Shell (Xiè Lǔ) / Chūka Ichiban!

Dark City Movie Style

[Illus] Snailgirl with shell - Snailtaur (HolymixIllustrious)

In Giant Shell

Mermaid Sea Dress

Shell slime / スライムつむり (Dragon Quest) IL/Pony

Turtle Shell Style [SDXL]

CHARACTER: KOOPA TROOPA / KOOPS [PONY XL | INDIGO XL]

Sea Shell World

Paua Shell

Shell Pasties/ Open Shell Bikini 贝壳乳贴

ShellMix

djz Ghost Shell