Claudio Contreras,Claudio Contreras / Crocodile Flatheadfish (Cymbacephalus beauforti), Inanuran Island, Danajon Bank, Central Visayas, Philippines, April

Michele Westmorland / Beaufort's Crocodilefish (Cymbacephalus beauforti) camouflaged on coral reef, House Reef at the Jetty, Tufi, Oro Province, Papua New Guinea

Doug Perrine / Crocodilefish camouflaged on coral {Cymbacephalus beauforti} Papua New Guinea

Bert Willaert / Crocodile Flathead (Cymbacephalus beauforti), Kimbe Bay, West New Britain, Papua New Guinea

Constantinos Petrinos / Giant flathead (Cymbacephalus beauforti) close up of eyel. Lembeh Strait, North Sulawesi, Indonesia.

Constantinos Petrinos / Giant flathead (Cymbacephalus beauforti) lying on a Finger Leather Coral (Sinularia polydactyla) Lembeh Strait, North Sulawesi, Indonesia.

Constantinos Petrinos / Giant flathead (Cymbacephalus beauforti) lying on a Finger Leather Coral (Sinularia polydactyla) Lembeh Strait, North Sulawesi, Indonesia.

Constantinos Petrinos / Giant flathead (Cymbacephalus beauforti) lying on a Finger Leather Coral (Sinularia polydactyla) Lembeh Strait, North Sulawesi, Indonesia.

Linda Pitkin / Crocodilefish (Cymbacephalus beauforti), resting on coral Dampier Strait, Raja Ampat, West Papua, Indonesia.

Linda Pitkin / Crocodilefish (Cymbacephalus beauforti), resting on coral Dampier Strait, Raja Ampat, West Papua, Indonesia.

Alex Mustard / Crocodilefish (Cymbacephalus beauforti) close up detail of the retractable eye-lashes, Mabul Island, Sabah, Borneo, Malaysia Celebes Sea

Alex Mustard / Crocodile fish (Cymbacephalus beauforti) sets an ambush by hiding in a leather coral (Sarcophyton sp) on a coral reef, Blue Magic, Raja Ampat, West Papua, Indonesia, Pacific Ocean.

Alex Mustard / Detail of retractable eye-lashes of Crocodilefish (Cymbacephalus beauforti) The crocodilefish is an ambush predator and this adaption helps it disguise itself while it lying in wait on the sea floor....

Georgette Douwma / Beaufort crocodile fish (Cymbacephalus beauforti) under coral overhang on sandy bottom. Egytp, Red Sea.

Juergen Freund / Crocodilefish (Cymbacephalus beauforti) detail of eye, Papua New Guinea.

Juergen Freund / Beaufort's crocodilefish (Cymbacephalus beauforti), detail of eye. North Raja Ampat, West Papua, Indonesia.

Juergen Freund / Beaufort's crocodilefish (Cymbacephalus beauforti), detail of mouth. North Raja Ampat, West Papua, Indonesia.

Hiroya Minakuchi / Beaufort's Crocodilefish (Cymbacephalus beauforti) eyes, Borneo, Malaysia

Juergen Freund / Beaufort's flathead / crocodile fish (Cymbacephalus beauforti) on the sandy seabed. Lembeh Strait, Sulawesi, Indonesia

Michele Westmorland / Beaufort's Crocodilefish (Cymbacephalus beauforti) camouflaged on coral reef, House Reef at the Jetty, Tufi, Oro Province, Papua New Guinea

Michele Westmorland / Close up of eyes of Beaufort's Crocodilefish (Cymbacephalus beauforti) House Reef at the Jetty, Tufi, Oro Province, Papua New Guinea

Doug Perrine / Beaufort's crocodilefish {Cymbacephalus beauforti} camouflaged on coral reef, Kimbe Bay, New Britain, Papua New Guinea

GEORGETTE DOUWMA / Beauforts crocodile fish (Cymacephalus beauforti) on coral rubble, Indonesia

Birgitte Wilms / Beaufort's Crocodilefish (Cymbacephalus beauforti) eye detail, 40 feet deep, Solomon Islands

Chris Newbert / Beaufort's Crocodilefish (Cymbacephalus beauforti) 40 feet deep, Solomon Islands

Chris Newbert / Beaufort's Crocodilefish (Cymbacephalus beauforti) detail of scales

Doug Perrine / Beaufort's crocodilefish / crocodile flathead {Cymbacephalus beauforti} juvenile resting on sea bed, Mabul Island, Celebes Sea, Borneo, Malaysia

Doug Perrine / Beaufort's crocodilefish {Cymbacephalus beauforti} camouflaged on seabed, Mabul Island, Borneo, Malaysia

GEORGETTE DOUWMA / Giant flathead / crocodilefish {Cymbacephalus beauforti}, Sulawesi, Indonesia

Doug Perrine / Close up of Crocodilefish camouflaged on coral, PNG {Cymbacephalus beauforti}

Birgitte Wilms / Beaufort's Crocodilefish (Cymbacephalus beauforti) detail of scales, 50 feet deep, Solomon Islands

Chris Newbert / Flathead (Platycephalus sp) close-up of eyes, Red Sea, Egypt

Fred Bavendam / Beaufort's Crocodilefish (Cymbacephalus beauforti) camouflaged on ocean floor waiting for prey, Milne Bay, Papua New Guinea

Fred Bavendam / Beaufort's Crocodilefish (Cymbacephalus beauforti) camouflaged on coral, Lembeh Strait, Indonesia

GEORGETTE DOUWMA / Beaufort's crocodile fish {Cymbacephalus beauforti} Bunaken MR, Sulawesi, Indonesia

Solvin Zankl / Beaufort's crocodilefish / Giant flathead {Cymbacephalus beauforti} Sulawesi, Indonesia

David Fleetham / Two adult Bluestreak cleaner wrasse (Labroides dimidiatus) searching head of Crocodile fish (Cymbacephalus beauforti) for parasites, Mabul Island, Malaysia.

Pete Oxford / Beaufort's Crocodilefish (Cymbacephalus beauforti), Banda Sea, Indonesia

Roberto Rinaldi / Close-up of a Crocodile fish (Cymbacephalus sp.), Flinders Reef, Australia

Magnus Lundgren / Camouflaged eye detail of a huge Crocodilefish (Cymbacephalus beauforti), Triton Bay, West Papua, Indonesia, Pacific Ocean.

Shane Gross / Crocodile fish (Cymbacephalus beauforti), ambush predator camouflaged and partially buried in sand on sea floor. Marsa Alam, Egypt.

Shane Gross / Red lionfish (Pterois volitans), two on sea floor beside Crocodile fish (Cymbacephalus beauforti), an ambush predator camouflaged and hidden. Marsa Alam, Egypt.

Georgette Douwma / Crocodile flathead (Cymbacephalus sp.) Lembeh Strait, North Sulawesi, Indonesia.

David Fleetham / Crocodile fish (Cymbacephalus beauforti) on a reef off the island of Yap, Micronesia.

Shane Gross / Crocodile fish (Cymbacephalus beauforti) juvenile, camouflaged. Palau.