Assertion: snorkel | /r/CapableOf | shield the air portal
Facets:
value: automatically
type: MANNER
value: from waves
type: TRANSITIVE-OBJECT
Source sentences:
text: Due to such problems associated with basic snorkels, snorkels have been developed that shield the air portal from waves or which seal the air portal of the snorkel tube.
text: In particular, the present invention relates to a snorkel which automatically seals its air portal when submerged.
text: Although snorkels which shield the air portal may be effective in preventing waves of water from flowing into the tube through the air portal, such shields are ineffective when the user intentionally or unintentionally submerges the top of the snorkel and its air portal below the water surface.