Dugong

Dugongs inhabit warm, shallow coastal waters of the Indo-Pacific, spanning approximately 40 countries and territories. Their range extends from the east coast of Africa, through the Red Sea and across the Indian Ocean, to the waters of Southeast Asia, Australia, and parts of the western Pacific. They are almost exclusively found in sheltered bays, mangrove channels, and broad, shallow coastal areas where extensive seagrass beds thrive.

These marine mammals are highly dependent on seagrass meadows for food, which makes their distribution closely tied to the presence and health of these underwater ecosystems. They prefer clear, calm waters where they can easily forage on the seabed, typically in depths of 1 to 10 metres (3 to 33 feet), though they can occasionally dive deeper.

Dugongs are primarily solitary or found in small groups, though larger aggregations can occur in areas with abundant food. They are slow-moving and generally shy, spending most of their day foraging on seagrass. Using their muscular, down-turned snouts, they 'graze' along the seabed, uprooting entire plants or nipping off blades. This feeding behaviour creates distinct trails, sometimes referred to as 'feeding trails' or 'dugong pastures,' visible on the seafloor.

Their diet is almost entirely composed of seagrass, making them unique among marine mammals. They consume a variety of seagrass species, preferring those with high nitrogen and low fibre content. This specialised diet and their slow metabolism contribute to their gentle, unhurried movements. Reproduction is slow, with females typically giving birth to a single calf after a 13-14 month gestation period, and calves staying with their mothers for up to 18 months.

Encountering a dugong while on a liveaboard is a truly special and often memorable experience for divers. These shy animals are not as commonly sighted as dolphins or turtles, making each encounter particularly valued. Liveaboard operators often know specific areas renowned for dugong populations, typically sheltered bays with extensive, healthy seagrass beds. Destinations like Raja Ampat, the Red Sea (especially Egypt's Marsa Alam region), and certain parts of Australia (e.g., Queensland) are well-regarded for potential sightings.

Diving with dugongs requires patience and adherence to responsible diving practices. Because they are easily spooked, a quiet approach, maintaining a respectful distance, and avoiding sudden movements are crucial to increase the chances of a prolonged encounter. Liveaboard itineraries allow for multiple dives in promising locations, significantly increasing your opportunities to spot these elusive 'sea cows' compared to day trips.

Myth: Dugongs are aggressive. Fact: Dugongs are renowned for their gentle, shy, and non-aggressive nature. They are herbivorous and pose no threat to humans, often retreating if approached too closely or disturbed. Any perceived aggression is typically a response to feeling threatened or startled.

Myth: Dugongs are a type of large fish. Fact: Dugongs are marine mammals, specifically belonging to the order Sirenia, which also includes manatees. They breathe air, give birth to live young, and nurse their calves, all characteristics of mammals, not fish.

Myth: Dugongs and manatees are the same animal. Fact: While closely related and both part of the order Sirenia, dugongs and manatees are distinct species. The most obvious difference is their tail: dugongs have a fluked, whale-like tail, whereas manatees have a paddle-shaped tail. They also differ in snout shape and geographic distribution.