This incredible footage of a live Barreleye was taken by the Monterey Bay Aquarium Research Institute. It has been viewed on YouTube over 3 million times.
The Barreleye, Macropinna microstoma has a transparent head and tubular eyes (the green upwardly directed globes). It lives at depths down to 800 m. The footage was taken by an ROV (remotely operated vehicle).
The species occurs in northern Pacific waters. About 11 species of barreleyes (family Opisthoproctidae) occur worldwide, with three species currently known from Australian waters;