Assertion: electric eel | /r/HasProperty | obligate
Facets:
Source sentences:
text: They are obligate air-breathers, which means they surface for air periodically.
text: It is an obligatory air breather (must breath air).
text: Electric eels are obligate air breathers.
text: Electric eels are obligatory air breathers.
text: These fish are obligate air-breathers, rising to the surface every 10 minutes or so, the animal will gulp air before returning to the bottom.
text: It is an obligatory air breather (must breath air).