Rare fish observation with ROV Doc Ricketts at about 1300 m
The pelican eel, Eurypharynx pelecanoides, is a deep-sea fish named for its large mouth reminiscent of a pelican’s. It belongs to the order Saccopharyngiformes, closely related to true eels in Anguilliformes. It is also referred to as the gulper eel or the umbrella-mouth gulper.
The mouth is loosely hinged, and can be opened wide enough to swallow a fish much larger itself and the stomach can stretch to accommodate large meals, although stomach content analysis suggests they primarily eat small crustaceans. The tail has a bioluminescent organs, possibly to lure prey.
(via: Monterey Bay Aquarium Research Institute)