Assertion: platypus's ear | /r/HasProperty | closed
Facets:
Source sentences:
text: Additionally, about 40,000 electroreceptors help them find the direction and distance of prey (its eyes and ears are closed while it’s underwater) by detecting electrical impulses generated by living creatures.
text: Tiny electrical currents given off my the bodily goings-on are detected by the bill, allowing the platypus to find food under water when its eyes, ears and even nostrils are closed.