Dugong Feeding Ecology and Marine Welfare

Dugongs are large marine herbivores that depend on seagrass meadows for survival. The health of these unique mammals is directly tied to the health of coastal marine ecosystems.

Key Facts

Dugongs are the only strictly marine mammal herbivore — they eat only seagrass
They can consume up to 40 kg of seagrass per day and leave distinctive feeding trails
Dugong populations have declined severely due to boat strikes, net entanglement, and seagrass loss
They are listed as Vulnerable globally, with some regional populations critically endangered
Dugongs are slow reproducers — females raise only one calf every 3-7 years
Indigenous communities across their range have traditional connections to dugong

Welfare Considerations

Dugong welfare is threatened most directly by seagrass degradation from coastal development, agricultural runoff, and climate-related bleaching events. When seagrass meadows decline, dugongs must travel further to feed, increasing exposure to boat strike zones. Entanglement in fishing nets causes drowning — dugongs must surface to breathe every few minutes. Boat strikes cause traumatic injuries including propeller cuts. Effective welfare measures include seagrass protection, boat speed restrictions in dugong areas, and modified fishing gear.

What You Can Do

Support seagrass conservation programs in dugong habitat countries
Respect boat speed restrictions in areas with dugong populations
Advocate for modified fishing gear to reduce dugong entanglement
Support organizations working on Indigenous-led marine mammal conservation