Around 250 different species of myctophids, or lantern fish
, make up much of this dense layer.
He added also that the Sultanate can play a pivotal role in the production of fish fodder as it has large quantities of lantern fish
(about 2-5 million tons).
What the echo sounders of old were actually picking up were the billions of swim bladders (buoyancy floats) of the fish inhabiting the dark realm of the DSL--primarily lantern fish
, bristlemouths, and hatchetfish.
Humboldt squid like to hunt in that zone, Zeidberg said, because prey such as lantern fish
often hibernate there during the day but don't have enough oxygen to escape the squid, which can travel at speeds of up to 15 miles per hour.
While lantern fish
use a luminescent lure to attract prey, scientists have learned to use cold light to help them with research.
His ideas of fireflies and lantern fish
have funny results.
Dr Lewis Halsay, from Birmingham University's School of Bio-sciences, said: "The lantern fish
the penguins eat are going to be moving further south into colder waters as the southern oceans increase in temperature due to global warming.
The myctophid lantern fish
won't win any beauty contests - but you would have to go 1.2 miles beneath the India Ocean to give one an entry form.