What is the conservation status of the Giant Manta Ray?

The Giant Manta Ray is listed as Endangered on the IUCN Red List. Facing a very high risk of extinction in the wild.

Where is the Giant Manta Ray found?

The Giant Manta Ray is found in Australia, Indonesia, Philippines, Maldives, Mexico, Ecuador, Peru, Brazil, Mozambique, Tanzania, Sri Lanka, India, Japan, United States, Colombia.

Giant Manta Ray (Mobula birostris) — Conservation Status & How to Help

About the Giant Manta Ray

The giant manta ray (Mobula birostris) is the largest ray species on Earth, with a wingspan reaching up to 7 meters (23 feet) and a weight of over 2,000 kilograms. It inhabits tropical, subtropical, and temperate ocean waters worldwide, feeding almost exclusively on zooplankton and small fish by filtering vast quantities of seawater through specialized gill plates. As a long-lived, slow-reproducing species that gives birth to a single pup every two to three years, it plays a quiet but measurable role in nutrient cycling across open-ocean and coastal reef systems.

The giant manta ray is listed as Endangered on the IUCN Red List, with population declines driven primarily by targeted fisheries and bycatch in gillnet and longline operations. Its gill plates are traded in significant volumes, particularly through markets in South and Southeast Asia where demand for use in traditional medicine remains persistent despite limited evidence of efficacy. Vessel strikes, entanglement in fishing gear, and the slow pace of reproduction compound the species' vulnerability, making recovery difficult even where protections exist.

Things worth knowing

The giant manta ray has the largest brain-to-body ratio of any fish, and laboratory studies have shown behavior consistent with self-recognition, a capacity observed in very few non-mammalian species.
Unlike most rays, Mobula birostris is entirely pelagic for much of its life, undertaking long-distance migrations across open ocean that can span thousands of kilometers between feeding and cleaning sites.
Giant manta rays visit specific coral reef cleaning stations repeatedly, where wrasse and other small fish remove parasites, suggesting they navigate with detailed spatial memory over large geographic ranges.
A single giant manta ray gill raker set can fetch hundreds of dollars on Asian dried seafood markets, a price point that has sustained targeted fisheries even in countries where the species holds legal protection.
Females reach sexual maturity at approximately 8 to 10 years of age and may live for 40 years or more, meaning population recovery following depletion is measured in decades rather than years.
Mobula birostris is protected under the Convention on Migratory Species (CMS) and listed on CITES Appendix II, requiring that any international trade be demonstrably non-detrimental to wild populations.

Giant Manta Ray

Things worth knowing

0 organizations protect the Giant Manta Ray