Assertion: sperm whale | /r/CapableOf | deposit estimated 36 tonnes of iron
Facets:
value: into surface waters
type: TRANSITIVE-OBJECT
value: each year
type: TEMPORAL
value: in the southern ocean
type: LOCATION
Source sentences:
text: In the Southern Ocean, approximately 12,000 sperm whales deposit an estimated 36 tonnes of iron into surface waters each year, enhancing primary production in phytoplankton.