Reef Manta Ray (Mobula alfredi) - Marine Life - Liveaboard Diving

Reef Manta Ray

Reef Manta Rays are very popular with scuba divers. They are large, intelligent, curious, friendly and harmless. They can grow up to 5 metres from wing tip to wing tip, but are normally 3 metres across. Large individuals are often mistaken to be Oceanic Manta Rays, which are a different species in the same genus (Mobula). The Reef Manta has more spots on its underside and there is less contrast in the coloration on its back. The Oceanic/Giant Manta Ray (Mobula birostris) has more defined colouration on its back, usually in the shape of a T. The Reef Manta's back is more of a V or Y shape, and less defined.

Until recently, these species were classified in their own genus, but have now been mmoved to the Mobula genus, which has also meant that their scientific classification name has changed as well.

Reef Manta Ray Mobula alfredi
Scientific Rank
Kingdom:Animalia
Phylum:Chordata (Chordates)
Class:Chondrichthyes: Cartilaginous fish
Order:Myliobatiformes (Rays)
Family:Mobulidae (Mobulidae)
Genus:Manta (Manta)
Species:Mobula alfredi
Size
Average Size:3 metres - 5 metres

Manta Rays are wonderful creatures, and make a scuba dive very special if you're lucky enough to encounter them. They are harmless to humans, inquisitive, playful and extremely intelligent. They have the largest brain to body size ratio of any fish. If you're ever lucky enough to see a Manta Ray while diving, do not approach or try to follow it. With its huge wing-like pectoral fins, it can swim a lot faster and further than you can, and it will just lead you out into the open. Then it will most likely turn around and visit your dive buddy or group. Divers should just remain at a safe depth and together. The ray will often come back to say hello again.

If some experts notice that one or more of the images on this page are of Oceanic Manta Rays, please contact us or comment. Our website is constantly being updated.

No Troubles Just Bubbles divers who recently spotted Reef Manta Ray

(29) - No Troubles Just Bubbles divers have spotted Reef Manta Ray on a liveaboard trip - showing the 8 most recent

Toni
Spotted in: Indonesia Indonesia
Liveaboard: Seven Seas
Destinations: Komodo, Sumbawa
When: Jun 2026
Alex
Spotted in: Maldives Maldives
Liveaboard: Blue Force One
Destinations: North Male Atoll, South Male Atoll, Vaavu Atoll, North Ari Atoll, South Ari Atoll, Faafu Atoll
When: Apr 2026
Thomas
Spotted in: Maldives Maldives
Liveaboard: Blue Force One
Destinations: North Male Atoll, South Male Atoll, Vaavu Atoll, North Ari Atoll, South Ari Atoll, Faafu Atoll
When: Apr 2026
Sarah
Spotted in: Thailand Thailand
Liveaboard: MV Stingray
Destinations: Similan Islands, Koh Bon
When: Feb 2026
Bob Gilmour
Spotted in: Maldives Maldives
Liveaboard: MV Carpe Diem
Destinations: Male Atoll, Vaavu Atoll, Ari Atoll, Faafu Atoll, Rasdhoo Atoll, Meemu Atoll, Dhaalu Atoll, Thaa Atoll, Laamu Atoll, Gaafu, Addu Atoll
When: Jan 2026
Nathália Aguiar
Spotted in: Egypt Egypt
Liveaboard: MY Alsuraya
Destinations: The Brothers, Daedalus, Elphinstone Reef
When: Nov 2025
SusanB
Spotted in: Egypt Egypt
Liveaboard: MY Ocean Lovers
Destinations: The Brothers, Daedalus, Elphinstone
When: Sep 2025
Matt
Spotted in: Maldives Maldives
Destinations: North Male Atoll, South Male Atoll, Ari Atoll, Rasdhoo Atoll, Vaavu Atoll
When: Aug 2025

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