| Vent |
| Mask feature |
| Whale feature |
| Breathing aid |
| Helmet feature |
| Opening in the ice |
| Ventilation source |
| Breathing tube part |
| Pet carrier feature |
| Ventilation opening |
| Hamster ball feature |
| Site for a seal, maybe |
| Aperture for ventilation |
| Where the polar bear waits |
| Opening on a box with a teddy bear, likely |