Oceanic Manta Ray (Mobula birostris) lives in tropical waters across Global tropics. It feeds on zooplankton and fish. Its conservation status is Endangered.
Fascinating facts about the Oceanic Manta Ray
- A giant oceanic manta can stretch to a 30-foot wingspan and a 23-foot disc, tipping the scales at about 6,600 lb, yet most individuals hover around 15 ft across. This sheer size makes it the world's largest ray, a living billboard of oceanic health that few predators can challenge.
- Its brain weighs up to 200 g, five to ten times heavier than a whale shark's, and is wrapped in a rete mirabile that warms blood flowing to the organ, a rare trait among fish that may let it pass the mirror test for self-awareness.
- Mantas roam the globe, turning up as far north as southern California, New Jersey, Japan's Aomori Prefecture, Egypt's Sinai Peninsula and the Azores, and as far south as Peru, Uruguay, South Africa and New Zealand. Their ocean-going lifestyle, hitching rides on currents to nutrient-rich upwellings, shows how a single species can link distant marine ecosystems.
- Males must reach a 13-ft disc to breed, while females need a 16-ft span; after a 12- to 13-month gestation they birth a single 4-ft-7-in, 20-lb pup that must grow in shallow waters for years. This slow, low-output reproduction makes populations highly sensitive to any increase in adult mortality.
- Over the past two decades the species has plummeted, earning an EN rating, as gill-rakers fetch up to $400 per kg for traditional Chinese medicine and fishing nets snag them in shallow waters. A 2019 Indonesian study also found they regularly ingest microplastics, which can carry pollutants that weaken gut bacteria and future reproductive fitness. This cocktail of harvest pressure and pollution threatens the very survival of the ocean's biggest plankton filter.
Sources
Every fact above was checked against these pages, and kept only where one of them states it.
At a glance
RangeGlobal tropics
HabitatTropical waters
DietZooplankton and fish
About the Oceanic Manta Ray
The Oceanic Manta Ray is the largest ray on Earth and one of the ocean's most intelligent animals. Cruising the warm, open waters of tropical and subtropical seas worldwide, these gentle giants move with extraordinary grace despite their wingspan exceeding 7 metres. Recognised by their broad, diamond-shaped disc, distinctive cephalic fins that curl into horn-like projections when not feeding, and the unique spot pattern on their pale white undersides, each individual is as identifiable as a human face. Unlike bottom-dwelling ray relatives, Manta Rays are pelagic and migratory, following seasonal plankton blooms across ocean basins and congregating in aggregations of hundreds of individuals.
Hear the Oceanic Manta Ray, and 4,400+ more
Real recorded sounds, 11 nature games and a free Daily 5, 1v1 quiz duels, conservation wins and a safe Kids mode. Free on Feravox.
More ocean life to discover
