Norbert Wu / Black Sea Dragon (Idiacanthus antrostomus) fishing lure in front of mountain, attracts prey, deep sea

Shane Gross / Sea moth / dragonfish (Eurypegasos draconis) camouflaged on the seabed, near Alor, Indonesia.

Jordi Chias / Antarctic dragonfish (Parachaenichthys charcoti) Antarctic Peninsula, Antarctica.

Pascal Kobeh / Little dragonfish / Dragon sea moth (Eurypegasus draconis) pair, Sulu Sea, Philippines

Solvin Zankl / Loosejaw fish (Malacosteus niger) with a light organ beneath its eye. Deep sea species in Atlantic Ocean off Cape Verde. Captive.

Solvin Zankl / Deep sea hatchetfish (Sternoptyx diaphana) profile. Deep sea species from Atlantic Ocean close to Cape Verde. Captive.

Solvin Zankl / Photophores of Diaphanous hatchetfish (Sternoptyx diaphana), photographed from underneath. Deep sea species from Atlantic Ocean off Cape Verde. Captive.

Solvin Zankl / Scaless black dragonfish (Melanostomias biseriatus) deep sea fish from Atlantic Ocean close to Cape Verde. Captive.

Solvin Zankl / Elongated bristlemouth (Sigmops elongatus), deep sea fish from Ocean off Cape Verde. Captive.

Solvin Zankl / Black dragonfish (Malacosteus niger) deep sea species with a light organ beneath its eye. Atlantic Ocean off Cape Verde. Captive.

Solvin Zankl / Lightfish (Ichthyococcus ovatus) bioluminescent deep sea species, Atlantic Ocean close to Cape Verde. Captive.

Solvin Zankl / Deep sea viperfish (Chauliodus sloani) portrait, from Atlantic Ocean close to Cape Verde. Captive.