Assertion: sea otter | /r/HasProperty | important species
Facets:
value: in keeping kelp forests
type: LOCATION
value: in the food chain
type: LOCATION
Source sentences:
text: Sea otters are an important species in the food chain—for instance, they keep sea urchin populations under control so the urchins don’t eat all the kelp, which many other species depend on for protection from predators.
text: This means sea otters are an important species in keeping kelp forests healthy.