fishing charter boat legend

Manta rayManta ray



Brian Johnson
Fossil range: 23–0 Ma
Early Miocene to Present[1]

Giant Pacific manta.  A large commensalistic remora is visible on the manta's ventral side
Giant Pacific manta. A large commensalistic remora is visible on the manta's ventral side

Conservation status

Near Threatened (IUCN 3.1)

Scientific classification














Bancroft, 1829


M. Birostris

Binomial name

Manta birostris
(Walbaum, 1792)

The manta ray (Manta birostris), is the largest of the rays, with the largest known specimen having been more than 7.6 m (about 25 ft) across, with a weight of about 2,300 kg (about 5,000 lb). It ranges throughout all tropical waters of the world, typically around coral reefs.
Mantas have been given a variety of common names, including Atlantic manta, Pacific manta, devilfish, and just manta. Some people just call all members of the family stingrays, though stingrays comprise a separate family of rays (Dasyatidae). Recent studies have discovered that what is called manta ray are at least two different species, one smaller local and one much larger and migratory.[2]


Mantas are most commonly black dorsally and white ventrally, but some are blue on their backs. A manta's eyes are located at the base of the cephalic lobes on each side of the head, and unlike other rays the mouth is found at the anterior edge of its head. To respire, like other rays, the manta has five pairs of gills on the underside.
To swim better through the ocean[citation needed], they have a diamond shaped body plan, using their pectoral fins as graceful "wings".
Distinctive "horns" (from which the common name Devil ray stems) are on either side of its broad head. These unique structures are actually derived from the pectoral fins. During embryonic development, part of the pectoral fin breaks away and moves forward, surrounding the mouth. This gives the manta ray the distinction of being the only jawed vertebrate to have novel limbs (the so-called six-footed tortoise, Manouria emys, does not actually have six legs–only enlarged tuberculate scales on their thighs that look superficially like an extra pair of hind limbs). These flexible horns are used to direct plankton, small fish and water into the manta's very broad and wide mouth. The manta can curl them to reduce drag while swimming.
Manta ray at Hin Daeng, Thailand.
Manta ray at Hin Daeng, Thailand.

[Evolution and taxonomy

Manta rays are believed by some to have evolved from bottom-feeding ancestry, but have adapted to become filter feeders in the open ocean. This allowed them to grow to a larger size than any other species of ray. Because of their pelagic lifestyle as plankton feeders, some of the ancestral characteristics have degenerated. For example, all that is left of their oral teeth is a small band of vestigial teeth on the lower jaw, almost hidden by the skin. Their dermal denticles are also greatly reduced in number and size, but are still present, and they have a much thicker body mucus coating than other rays. Their spiracles have become small and non-functional, as all water is taken in through their mouth instead.
A Manta ray with attached remoras at Ningaloo Reef.
A Manta ray with attached remoras at Ningaloo Reef.
Taxonomically, the situation of the mantas is still under investigation. Three species have been identified: Manta birostris, Manta ehrenbergii, and Manta raya, but they are quite similar, and the latter two may just be isolated populations. The genus Manta is sometimes placed in its own family, Mobulidae, but this article follows FishBase taxonomy, and places it in the family Myliobatidae, along with eagle rays and their relatives.


Mantas are filter feeders: they feed on plankton, fish larvae and the like, passively filtered from the water passing through their gills as they swim. The small prey organisms are caught on flat horizontal plates of russet-coloured spongy tissue, that span the spaces between the manta's gill bars.
Mantas frequent reef-side cleaning stations where small fish such as wrasses and angelfish swim inside the manta's gills and all over its skin to feed, in the process cleaning it of parasites and removing bits of dead skin.
The predators of the Manta ray include mainly large sharks, however in some circumstances orcas have also been observed preying on them.
Mantas are extremely curious around humans, and are fond of swimming with scuba divers. Although they may approach humans, if touched, their mucus membrane is removed, causing lesions and infections on their skin. They will often surface to investigate boats (without engines running). They have the largest brain-to-body ratio of the sharks and rays.[3]
Mantas are known to breach the water into the air.

In culture

Moche Manta ray AD 200 Larco Museum Collection Lima, Peru.
Moche Manta ray AD 200 Larco Museum Collection Lima, Peru.
The Moche people of ancient Peru worshipped the sea and its animals. They often depicted Manta rays in their art. [4]
SeaWorld Orlando will debut Manta, a flying roller coaster themed to resemble the manta ray, in the summer of 2009.

[ In captivity

Manta Rays are very rarely kept in captivity, primarily due to their size. Only four aquariums in the world currently have manta rays on display.[5] One notable example is "Nandi", a manta ray that was accidentally caught in shark nets off the coast of Durban, South Africa in 2007. Fully rehabilitated and beginning to outgrow the aquarium, Nandi was transferred to the larger Georgia Aquarium in August 2008, where she resides in its 6.2-million-gallon "Ocean Voyager" exhibit.

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