Assertion: seal's weight | /r/HasProperty | heavy
Facets:
Source sentences:
text: Once considered adults, arctic seals can weigh between 400 to 800 kg and reach, despite their heavy weight, speeds of more than 50 km/h.
text: The elephant seals can barely move on land because of their heavy weight however, flippers make these creatures swift and powerful swimmers, but they are not strong enough to lift their body off the ground.