Architeuthis dux — The world’s largest known squid — surprisingly shy camera.
The elusive giant squid has been folklore winding its way and inspiring horrific stories for thousands of years. Kraken With a body about the size of an island. actually, A. Dax Is a little smaller and can grow up to about 46 feet (14 meters) in length — the length of a semi-trailer.
However, despite their size, these cephalopods are rarely found in water.Most observations of behemoths come from dead or dying squid Launch to the shore Or get caught in a deep-sea trawl. It finally changed in 2012 when a team of marine scientists filmed young people. A. Dax In its natural habitatApproximately 2,000 feet (630 m) below the sea south of Japan.
Studies currently published online in the journal Deep Sea Research Part 1: Oceanographic Research Papers We’ll delve into why these deep-sea giants are so elusive and explain how a team of researchers was able to capture them. First video of A. Dax In its natural habitat in 2012, and 2019 as well In the Gulf of Mexico.
According to the authors of the study, many of whom attended the 2019 giant squid sightings, the avoidant behavior of creatures is partly Its huge eyes..
The giant squid can live thousands of feet below sea level. The giant squid has evolved the largest eye in the animal kingdom to adapt, as sunlight rarely penetrates this deeply. Each of these cephalopod peep is about the same size as a basketball and about three times the diameter of other animals. Live science previously reported..
According to the authors of the study, these giant eyes not only help giant squids pass through deep, dark waters, but are probably very sensitive to the bright light that marine researchers attach to submersibles and underwater cameras. Let’s do it. Its sensitivity can explain why the giant squid is so difficult to find in its natural habitat. By the time the research vehicle arrived at the squid’s swimming pool, the squid had escaped from the light and vibration of the ship.
Researchers involved in 2012 and 2019 to correct this overillumination A. Dax Witness information turned off the lights on their submersible (named Medusa). After reaching the desired depth, Medusa turned off the lights and stopped moving, allowing deep-sea creatures to come there rather than actively moving to the bottom of the sea. The team also took advantage of natural deep-sea color blindness to illuminate the camera with dim red light instead of the bright white light normally used on such expeditions.
“Many deep-sea species, including squid, have a monochromatic visual system adapted to blue. [light] And blue Bioluminescence Instead of long-wavelength red light, the researchers wrote, “Therefore, using red light may be an unobtrusive way to illuminate deep-sea species for video recording.”
Researchers also took advantage of the charm of squid to take advantage of the blue light and equip Medusa with a custom lure called the E-Jelly. This small rotating ring of neon blue light sits on the edge of an extended arm, mimicking the movement and brilliance of a bioluminescent jellyfish.
The lure works and the drawing A. Dax From the dark in both 2012 and 2019. In fact, the giant squid found in the Gulf of Mexico was a little too convinced by the E-Jelly exhibit. As the video of the encounter shows, the giant squid tried to attack Medusa’s camera arm with his tentacles, hoping to bring home a nice jellyfish meal. (This attack allowed the team to measure the tentacles of the squid, which were nearly 6 feet (1.8 m) long).
Researchers have concluded that this strategy, which combines a low-light device with a bioluminescent bait, is the most effective and known method of tricking the giant squid into hiding. This is a useful trick as there is a lot to learn about Kraken behavior that is only revealed in the darkness of its natural habitat.
Originally published in Live Science.
How scientists captured the footage of “Kraken” after centuries of searching
Source link How scientists captured the footage of “Kraken” after centuries of searching