Giant Manta Ray

Giant Manta Rays Giant Manta Rays
Giant Manta Rays

Credit: Johan Folmeus

Giant Manta Ray

Credit: Johan Folmeus

Giant Manta Ray

Credit: Johan Folmeus

Giant Manta Ray & Trevally

Credit: Alvaro Herrero

Giant Manta Ray Manta birostris

Giant/Oceanic Manta Rays (Manta biostris) is a very special species to encounter when scuba diving. They are large, intelligent, curious, friendly & harmless. They can grow up to 7 or more metres from wing tip to wing tip, but are normally 5-6 metres across. They are larger than Reef Manta Rays, which are a different species in the same genus (Manta). The Giant Manta has fewer spots on its underside and there is more contrast in the coloration on its back. The Reef Manta Ray (Manta alfredi) has less defined colouration on its back, usually in the shape of a Y or V. The Giant Manta's back is more of a T shape, and more defined. 

Scientific Rank
Chordata (Chordates)
Subphlum: Olfactores
Subphlum: Vertebrates
Subphlum: Gnathostomata
Chondrichthyes: Cartilaginous fish
Order: Myliobatiformes (Rays)
Family: Mobulidae (Mobulidae)
Genus: Manta (Manta)
Species: Manta birostris
Average Size: 6 metres

Giant Manta Ray - Where Can You Find Them When Scuba diving?


  • Similan Islands
  • Richelieu Rock
  • Hin Daeng
  • Koh Haa
  • Phuket
  • Koh Phi Phi
  • Surin Islands
  • Hin Muang
  • Koh Tachai
  • Boonsung Wreck


  • Ari Atoll
  • Addu Atoll
  • Male Atoll
  • Vaavu Atoll
  • Meemu Atoll
  • Rasdhoo Atoll
  • Thaa Atoll
  • Lhaviyani Atoll
  • Baa Atoll
  • Noonu Atoll
  • Raa Atoll


  • Komodo
  • Raja Ampat
  • Lombok
  • Bali
  • Lembeh
  • Ambon
  • Banda
  • Cenderawasih Bay
  • Misool
  • Forgotten Islands
  • Maumere


  • Mergui Archipelago


Data not yet available


  • The Brothers
  • Elphinstone
  • Thistlegorm Wreck
  • Daedalus
  • Ras Mohamed
  • Abu Nuhas
  • St. John's
  • Abu Galawa Soraya
  • Gubal
  • Zabargad Island
  • Rocky Island

Have you ever seen Giant Manta Ray when diving?
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