Assertion: european eel | /r/HasProperty | nocturnal
Facets:
Source sentences:
text: Ecology: European eels are nocturnal, finding hiding places or burrowing into mud (or under stones) during the day and coming out in search of food at dusk.
text: The European eel is a nocturnal predator, feeding on small animals equivalent to fish, arthropods, crustaceans and mollusks.