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Manta rays are large rays belonging to the genus Mobula (formerly its own genus Manta). The larger species, M. birostris , reaches 7 m (23 ft) in width, while the smaller, M. alfredi , reaches 5.5 m (18 ft).
The giant oceanic manta ray can grow up to a maximum of 9 m (30 ft) in length [6] and to a disc size of 7 m (23 ft) across with a weight of about 3,000 kg (6,600 lb), [7] [8] but the average size commonly observed is 4.5 m (15 ft). [9]
Reef manta rays are typically 3 to 3.5 m (9.8 to 11.5 ft) in disc width, [7] with a maximum size of about 5.5 m (18 ft). [4] For a long time included in M. birostris , the status of the reef manta ray as a separate species was only confirmed in 2009. [ 4 ]
The National Oceanic and Atmospheric Administration's fisheries division is trying to get a better count of population sizes and the distribution of giant manta rays in the Atlantic, including ...
The manta ray, here seen at Hin Daeng, Thailand, is the largest ray. Both the largest species of this order and the largest of all rays is the giant oceanic manta ray (Manta birostris). This peaceful leviathan can reach a size of 3,000 kg (6,600 lb), a "disk" width of 9.1 m (30 ft) and a total length of 5 m (16 ft). [44]
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Depending on the species, the devil rays can attain widths up to 1.1–5.2 m (3.6–17.1 ft), the largest being second only to the manta rays in size, which can reach 5.5–7.0 m (18.0–23.0 ft). [3] Despite their size, little is known about the devil rays, much of it anecdotal; the manta rays are better known.