Juergen Freund / Giant manta ray (Manta birostris) at a cleaning station with diver looking up at it. North Raja Ampat, West Papua, Indonesia, February 2010

Alex Mustard / Manta ray (Mobula birostris) approaching a reef to be cleaned. Cousins Rock, San Salvador Island, Santiago Island, Galapagos National Park, Galapagos Islands. East Pacific Ocean.

Alex Mustard / Oceanic manta (Mobula birostris). Cousins Rock, San Salvador Island, Santiago Island, Galapagos National Park, Galapagos Islands. East Pacific Ocean.

Stephane Granzotto / Whale shark (Rhincodon typus) and Manta ray (Manta birostris) during a sardine run, Yucatan, Mexico.

David Fleetham / Manta ray (Manta birostris) gliding over a cleaning station in M'il Channel, Yap, Micronesia.

Jordi Chias / Giant manta (Manta birtostris) Ari Atoll, Maldives islands, Indian Ocean

Jordi Chias / Giant manta (Manta birtostris) swimming over the reef, Ari Atoll, Maldives Islands. Indian Ocean

Jordi Chias / Giant manta (Manta birtostris) swimming over a cleaning station, Malet Atoll, Maldives islands.

Franco Banfi / Manta ray (Manta birostris) Tubbataha Reef Natural Park, UNESCO World Heritage Site, Sulu Sea, Cagayancillo, Palawan, Philippines

Claudio Contreras / Giant Manta Ray (Manta birostris), with Remoras (Echeneididae) Socorro Island, Revillagigedo Archipelago Biosphere Reserve (Socorro Islands), Pacific Ocean, Western Mexico, March

Claudio Contreras / Giant manta ray (Manta birostris), Roca Partida Islet, Revillagigedo Archipelago Biosphere Reserve (Socorro Islands), Pacific Ocean, Western Mexico, March. Vulnerable,

Claudio Contreras / Giant Manta Ray (Manta birostris), IUCN Vulnerable, Socorro Island, Revillagigedo Archipelago Biosphere Reserve (Socorro Islands), Pacific Ocean, Western Mexico, March