The reef manta is common throughout the central and western Pacific and Indian Oceans but has not yet been found in New Zealand waters. Giant manta rays are closely related to the reef manta ray ( Mobula alfredi) and their smaller relatives, the devil rays ( Mobula spp.). If you see a giant manta ray or devil ray, report it to DOC at You can also support citizen science by reporting giant manta ray sighting to Manta Watch New Zealand. This sting has become functionless as they’ve evolved. But the giant manta has a large swelling at the base of the tail close to the dorsal fin where a sting is buried in. Manta rays do not have a functional barb or sting on their tail. This has given rise to their alternative common name of ‘devilfish’. While rolled up, giant manta rays' cephalic fins resemble horns. They use these for feeding, and roll them up to improve swimming efficiency when not in use. Giant manta rays have diamond-shaped bodies and two large muscular fins that protrude forward from the head either side of their mouth. But divers have occasionally been towed through the water at high speeds when mantas have become accidentally tangled in their float lines. They can also beat them in opposite directions – one up, one down.Īlthough once thought to migrate seasonally to the waters around northern New Zealand, research on other populations in the Indo-Pacific region suggests that the giant manta seen in our waters during spring and summer each year may be resident in this part of the southwest Pacific. Giant manta rays ( Mobula birostris) have huge, diamond shaped bodies and swim by beating their ‘wings’ up and down together.
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