Beijing time on August 10, according tomedia reports, according tomedia reports, the latest research shows that some deep-sea fish have special ultra-dark skin, even in the light, can be cleverly hidden, such as some black-skinned fish: sea slugs and wolf tooth fish, can absorb contact with their bodies 99.5% of the light.
The new study suggests that mysterious ultra-black fish can hide even when deep-sea organisms are in the presence of a light source, and they have superior camouflage skills because of the special structure of their skin.
If you want to blend into an infinitely dark environment and absorb every photon that collides with your body, this is a very troublesome thing. To better understand these mysterious deep-sea super-black fish, scientists began exploring monterey Bay and the Gulf of Mexico, where the team used trawlers and remote-controlled submarines to catch dozens of ultra-black fish in 1.6-kilometer-deep waters.
The researchers used spectrometers to measure the amount of light reflected by the skin of these ultra-black fish, which is one of the darkest known organic materials, and, incredibly, these fish reflect only less than 0.5% of light that comes into contact with their bodies, and the rest is absorbed by ultra-dark skin, which is truly invisible even if there is a biological light source around them.
The Pacific Black fish,named Idiacanus antrostomus is the second ultra-black fish they study, combining ultra-black skin camouflage with bioluminescent baits to attract prey. Without their ultra-black skin and transparent anti-reflective teeth, scientists say, these glowing baits will scare off their prey.
Currently, the researchers have found 16 species of ultra-dark-skinned deep-sea fish, including: small herring, which absorbs 99.96 percent of the incident light, and the presence of so many ultra-black fish in the deep sea is a good example of convergent evolution, in which some unrelated species evolve to form the same characteristics.
Super-black fish have appeared more than once in the fish evolutionary tree spectrum, and new research suggests that ultra-black skin becomes super-black because of the presence of a special melanin, a tiny pigment pack called melanin, in fish’s skin cells. Compared to ordinary black fish, these special melanin shapes are unique, looking at these structures through an electron microscope, you can see that the black skin in the shape of a click sugar, while the normal black skin of the melanocyl shape is teardrop-like.
The ultra-black melanin gathers tightly, close to the surface of the skin, forming a continuous thin slice that wraps around the fish’s body. In normal black skin, melanin is separated by a gap without pigment, and computer models show that melanin in ultra-black fish skin reduces reflectivity in one of the best geometric configurations, and the immediately absorbed light is not redirected to adjacent melanin, but almost entirely absorbs light.
In addition to the natural environment of the deep-sea region, there are biological examples of ultra-black camouflage, including some butterfly and bird species, whose reflective capabilities are only slightly worse than those found in the latest study. Interestingly, the ultra-black material created by humans now surpasses all biological ultra-black materials in nature and has now produced a black material capable of absorbing 99.995% of the incident light. (Leaf Town)