Claire Corlett

Fish Food, Fish Tanks, and More
Why this deep sea fish has scientists stumped 🤔 – BBC

Why this deep sea fish has scientists stumped 🤔 – BBC

It’s a deep-sea dragon fish. The red spot
just below the eye is a photo for a light emitting organ. Even Robeson has
never seen it in action before. The deep sea dragon is only 10 centimeters in
length but Robeson is keen to find out how its light producing organ works. To
seed the photo for in action they’ll need some highly specialized equipment. The red light emitted by the photo 4 is
too weak to register on an ordinary camera but the team has developed one
that is 600 times more sensitive. Tested outside on a clear night it produces an
astonishingly sharp image of the stars so it should be able to detect the light
produced by bioluminescent animals. The team have set up a filming tank in a
dark room with water that’s kept at the same temperature as the deep ocean. With
any luck the dragon fish should behave relatively naturally in these conditions. Under normal lights the fascinating
creature lives up to its name it looks truly fearsome and the two
photophores are clearly visible under each eye but in the dark
the photophores light up. They glow in unison one red and the other blue and
then a surprise. This is something that no one has ever
seen before. “That’s unexpected and it’s interesting.” It’s a spectacular
display but what is its function? It could be to frighten off a predator but
no one knows. We may not find the answer for many years yet.

100 comments on “Why this deep sea fish has scientists stumped 🤔 – BBC

  1. Wouldnt the pressure differential of normal atmosphere compares to the deep sea be too great for the creature to be comfortable?

  2. I would never understand how anyone could dislike anything David attenborough makes some real depressing people out there

  3. When this all body flashing appears, the mouth opens and the whole body contract down the animal. Makes me think it is related to a kind of prey acquisition like 'suck with the mouth a prey visually stunt by the whole body flash, contracting the body under may serve to cut the most usual way a prey might use to escape sudden danger. Contracting the body downward is also more useful than contracting upward because it gives 'more skin' to the mouth when it open for a big prey.

  4. I was like "Holy shit that's terrifying. Never going swimming again"

    And then the narrator said it was 10 cm long

  5. This display obviously has some ritual function. Oh biology, not archaeology? This display is obviously used to frighten off predators.

  6. God is all wise & all knowing.. Praise the Lord for he has all the knowledge & purpose. We see his wisdom through these animals. There's a lot we don't know!

  7. That’s the mother.

  8. It's probably a baby. I bet they grow to like 8 feet long, have venomous fengs and eat dolphins when fully grown.

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