冋
Radical
Pufferfish
Mnemonic
You dive into an underwater tunnel and suddenly a huge mouth blocks your path—it belongs to a Pufferfish that has inflated itself to perfectly seal the tunnel! Its mouth puckers smugly, cheeks ballooned out like a cork plugging a bottle. No way through!
Additional thoughts
Picture the round pufferfish wedged in the tunnel like a living plug, its pouty mouth facing you. Tunnel = body shape when inflated, Mouth = its distinctive puckered lips.Quick recall
A tunnel is sealed shut by the puckered mouth of an inflated Pufferfish.