Michael Pitts / Shovelnose ray (Glaucostegus typus) Lady Elliot Island, Great Barrier Reef, Australia.

Pascal Kobeh / Halavi guitarfish (Rhinobatos halavi) on sea floor, Egypt. Red Sea.

Alex Mustard / Giant guitarfish (Rhynchobatus djiddensis) swimming over a coral reef, Gili Lawa Laut, Komodo National Park, Indonesia, Flores Sea.

Sirachai Arunrugstichai / Ranong guitarfish (Rhinobatos ranongensis) caught in a bottom-set gill net in the offshore region of the Myeik Archipelago, Tanintharyi Region, Myanmar, Andaman Sea.

Shane Gross / Banded guitarfish (Zapteryx exasperata) resting on seabed, La Ventana, Baja California, Mexico, Sea of Cortez.

Sergio Hanquet / Giant guitarfish (Rhynchobatus djiddensis) resting on seabed, Male Atoll, Maldives, Indian Ocean.

David Fleetham / Bowmouth guitarfish / Shark ray (Rhina ancylostoma) resting on a reef surrounded by various reef fish, Philippines, Pacific Ocean.

Pascal Kobeh / A Giant guitarfish / Whitespotted wedgefish (Rhynchobatus djiddensis) partially buried in the sand with two remoras (Echeneis naucrates) above it, Indian Ocean, Maldives.

Pascal Kobeh / Diver watching a Giant guitarfish / Whitespotted wedgefish (Rhynchobatus djiddensis) partially buried in the sand with two remoras (Echeneis naucrates), Indian Ocean, Maldives. Model released.

Pascal Kobeh / Giant guitarfish / Whitespotted wedgefish (Rhynchobatus djiddensis) swimming up from resting on the sea floor, Indian Ocean, Maldives.

David Fleetham / Common shovelnose ray (Glaucostegus typus) portrait, Indonesia

Alex Mustard / Giant guitarfish (Rhynchobatus djiddensis) rests on the seabed. Laamu Atoll, Maldives. Indian Ocean

Sirachai Arunrugstichai / Bottlenose wedgefish (Rhynchobatus australiae) juvenile that was caught as bycatch in gill nets, handled while being held in captive pond, Chonburi Province, Thailand, March

Sirachai Arunrugstichai / Bottlenose wedgefish (Rhynchobatus australiae) gliding along the reef slope in the late evening, North Male Atoll, Republic of Maldives

Sirachai Arunrugstichai / Bottlenose wedgefish (Rhynchobatus australiae) glides along the reef edge in the late evening, while a SCUBA diver observing it from distance, North Male Atoll, Maldives. Critically endangered species...

Sirachai Arunrugstichai / Bottlenose wedgefish (Rhynchobatus australiae) glides along the reef edge in the late evening, while a SCUBA diver observing it from distance, North Male Atoll, Maldives. Critically endangered species...

Sirachai Arunrugstichai / Bottlenose wedgefish (Rhynchobatus australiae) on sandy bottom in the late evening, foraging for food near a fish factory, Male Atoll, Republic of Maldives. Critically endangered species.

Shane Gross / Common guitarfish (Rhinobatos rhinobatos) hunting in Tapegrass (Halophila stipulacea) seagrass bed. Marsa Alam, Egypt.

Shane Gross / Common guitarfish (Rhinobatos rhinobatos) hunting in seagrass bed, view from above. Marsa Alam, Egypt.

Sirachai Arunrugstichai / Bottlenose wedgefish (Rhynchobatus australiae) weighed on a weighing scale, Songkhla fish landing site, Thailand, December 2012.

Sirachai Arunrugstichai / Shark ray (Rhina ancylostoma) handled by a team of aquatic veterinarians, where the teeth for crushing shells of mollusks and crustaceans can be clearly seen, Rayong Province, Thailand. Critically end...

Sirachai Arunrugstichai / Dorsal fin of a Bottlenose wedgefish (Rhynchobatus australiae) measured by a researcher at a fish landing site, Ranong Province, Thailand. Despite being scientifically classified as rays, the fins f...

Sirachai Arunrugstichai / Bottlenose wedgefish (Rhynchobatus australiae) displayed for auction at a fish landing site Ranong Province, Thailand. Critically endangered species.

Sirachai Arunrugstichai / Shovelnose rays (Rhinobatos sp.) laid on the floor at a fish landing site for auction, Ranong Province, Thailand, April 2015.

Sirachai Arunrugstichai / Shark rays (Rhina ancylostoma) two juveniles, displayed on the floor for auction at a fish landing site in Ranong Province, Thailand, April 2015. Critically endangered species.

Sirachai Arunrugstichai / Fresh fins from small sharks and shark-like rays, such as the Shovelnose rays (Rhinobatidae) on the floor at a shark processing factory in Ranong Province, Thailand, July 2014. According to a report...

Sirachai Arunrugstichai / Dried fins from small sharks and shark-like rays, such as the Shovelnose rays (Rhinobatidae). Laid on the nets for drying at a shark processing factory in Ranong Province, Thailand, July 2014. Acc...

Alex Mustard / Giant guitarfish (Rhynchobatus djiddensis) rests on the seabed. Laamu Atoll, Maldives. Indian Ocean

David Fleetham / Common shovelnose ray (Glaucostegus typus) Indonesia.