Dugong

Dugong facts at a glance

How big is a dugong?

An adult dugong measures 2.8 m long — about 1.6× the height of an average adult person (1.73 m) — and weighs around 300 kg, about 4.3× an average adult’s body weight (70 kg).

What is a group of dugongs called?

Explore more animal collective nouns and baby animal names .

Seagrass gardener

Dugongs crop seagrass with stiff bristled lips, preferring certain species and leaving tell-tale feeding trails across meadows. Healthy dugong populations indicate productive seagrass ecosystems that also support fish, turtles, and coastal fisheries.

Sirenian relatives

Dugongs are the only living sirenians in the Indo-Pacific; manatees occupy the Atlantic. Their closest land relatives are elephants. Females produce a single calf after a 13–14 month gestation, nursing for up to 18 months — a slow reproductive rate that limits recovery from population declines.

Cultural significance

Indigenous Australian communities and coastal peoples across the Indo-Pacific have long hunted dugongs for meat and oil, with cultural protocols in many areas. Today legal harvest, accidental drowning in fishing nets, and habitat degradation threaten remaining herds.

Conservation priorities

Listed Vulnerable, dugongs benefit from marine protected areas, speed limits for boats, and seagrass restoration. The Great Barrier Reef and Arabian Gulf hold significant populations. Entanglement in gillnets remains a leading cause of death in Southeast Asia.

Did you know? Dugong facts

• The dugong is a large marine mammal that grazes seagrass meadows in warm coastal waters from East Africa to Australia.
• Dugongs have fluked whale-like tails and live in the Indo-Pacific. Manatees have paddle-shaped tails and live in the Atlantic and adjacent rivers.
• Sailors' accounts of mermaids may have been inspired partly by dugongs and manatees surfacing in calm seas — though the resemblance is much debated.
• Almost exclusively seagrass, consuming up to 40 kg daily. They avoid areas where seagrass is sparse or polluted.
• Shallow waters off Australia (especially Queensland), the Red Sea, Arabian Gulf, and parts of Southeast Asia and East Africa where seagrass meadows remain healthy.
• Conservation: Vulnerable (IUCN).

Diet & feeding

Dugong feeds primarily as a herbivore — seagrasses and algae. Dugongs crop seagrass with stiff bristled lips, preferring certain species and leaving tell-tale feeding trails across meadows. Healthy dugong populations indicate productive seagrass ecosystems that also support fish, turtles, and coastal fisheries.

Adaptations

• Dugongs crop seagrass with stiff bristled lips, preferring certain species and leaving tell-tale feeding trails across meadows. Healthy dugong populations indicate productive seagrass ecosystems that also support fish, turtles, and coastal fisheries.
• Dugongs are the only living sirenians in the Indo-Pacific; manatees occupy the Atlantic. Their closest land relatives are elephants. Females produce a single calf after a 13–14 month gestation, nursing for up to 18 months — a slow reproductive rate that limits recovery from population declines.

Behaviour & ecology

• Dugongs crop seagrass with stiff bristled lips, preferring certain species and leaving tell-tale feeding trails across meadows. Healthy dugong populations indicate productive seagrass ecosystems that also support fish, turtles, and coastal fisheries.
• Dugongs are the only living sirenians in the Indo-Pacific; manatees occupy the Atlantic. Their closest land relatives are elephants. Females produce a single calf after a 13–14 month gestation, nursing for up to 18 months — a slow reproductive rate that limits recovery from population declines.
• Indigenous Australian communities and coastal peoples across the Indo-Pacific have long hunted dugongs for meat and oil, with cultural protocols in many areas. Today legal harvest, accidental drowning in fishing nets, and habitat degradation threaten remaining herds.

Communication

• Dugong uses scent, posture, and vocal signals to mark territory and coordinate social behaviour.
• Communication intensity often peaks during breeding seasons and territorial disputes.

Habitat & range

Shallow coastal waters, bays, and seagrass meadows of the Indo-Pacific

Ecological role

Dugong shapes vegetation through grazing or browsing and serves as prey for larger predators where ranges overlap.

Conservation status of the Dugong

Sources & references

This guide is compiled and reviewed against established zoological and conservation references. Key sources for the Dugong:

• IUCN Red List of Threatened Species

  Conservation status (Vulnerable) reflects the IUCN Red List category for Dugong dugon.

• iNaturalist — observations & photos

  Search citizen-science observations and community IDs for Dugong dugon. Useful for range checks and recent sightings — not a substitute for formal Red List status.

• GBIF — occurrence data

  Global Biodiversity Information Facility species search for Dugong dugon. Explore published occurrence records used in range research.

• IUCN Red List — Dugong dugon.

  Conservation status (Vulnerable) and population trends.

• Animal Diversity Web — Dugong dugon. University of Michigan Museum of Zoology.

  Life history, morphology, and range.

• Global Animal Guide editorial standards

  How we research, source, review, and update every guide for accuracy.