Norbert Wu / California Bigeye Octopus (Octopus californicus) swimming, southern California

Norbert Wu / Big-mouth Gulper (Eurypharynx pelecanoides) deep sea species with hinged mouth swings wide open to accommodate large prey, San Diego, California

Norbert Wu / Cosmopolitan Whipnose (Gigantactis vanhoeffeni) a deep sea anglerfish with long fishing pole using bioluminescent lure attracts prey

Flip Nicklin / Flatfish (Pleuronectiformes) camouflaged on ocean floor, California

Norbert Wu / Viperfish (Chauliodus sp) chasing Hatchetfish (Sternoptyx sp) deep sea

Norbert Wu / Oarfish (Regalecus glesne) reach eight meters in length, Eastern Pacific

Norbert Wu / Tunicate (Megalodicopia hians) predatory deep sea species, Monterey, California

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

David Hall / Soft coral ghostgoby (Pleurosicya boldinghi) swimming through Soft coral (Dendronephthya). Shrimp and benthic Comb-jellies (Ctenophora) present, all commensal. Pantar, Alor Archipelago, Indonesia.

Nick Hawkins / A common sea star (Asterias rubens) mixes with the benthic lsea life life off Bonaventure Island, Gulf of Saint Lawrence, Quebec, Canada. September.

Franco Banfi / Benthic hydrozoan (Ptychogastria polaris) on seaweed. Tasiilaq, East Greenland. April.

Franco Banfi / Benthic hydrozoan (Ptychogastria polaris). Tasiilaq, East Greenland. April.