Blue is the symbol of eternity. It is the coldest color. However, if the relationship between blue and animals is concerned, many people will find it strange.
Is there really a blue animal in the world? Let alone haven't seen it. But if you are told that these blue elves not only exist in this magical earth, but also far more than one, you will be surprised.
1. Blue Tiger
The blue tiger is sometimes referred to as the other tiger, which is named after a large silver gray cat found in Maotai.
The blue tiger's fur is striped in white, black and light gray, or at least as the artist imagines in these images.
2. Blue butterfly
It can be seen in central and South America. Although not all of them are blue, the blue color has been quite noticeable since prehistoric times.
Surprisingly, the wings of the blue butterfly are not really 'Blue' in the sense of perception.
They are rainbow colored: the upper surface is covered with transparent scales, which reflect light to form interference patterns that make our eyes and brain mistake for blue.
3. Blue Lobster
Blue Lobster, a rare genetic mutation in American lobster, is one in two million crustaceans.
It makes them look pretty cool. The mutated lobster produces an excess of a protein that reacts to form a blue compound called astaxanthin, which makes its shell bright blue.
4. Blue ring octopus
The blue ring octopus takes' cause temptation 'to a whole new level.
This small, shy Octopus lives on the Pacific coast and has a deadly venom. You'd better not mess with them!
The venom of the blue ring octopus is a powerful neurotoxin similar to that found in poisonous snails and puffers.
A blue ring octopus with enough venom can kill 26 people in a few minutes, and there is no way to detoxify it.
5. Blue ribbon eel
The blue belt eel is the best among the eels. Fully developed adult eels are over 0.9 meters long and can live for 20 years.
They are close relatives of the famous European eel.
The blue belt eel stands out against the yellow edge. It seems to be a strange animal that hides most of its time in a nest on the sea floor or in the plastic pipes of an aquarium.
6. Blue arrow poison frog
The blue arrow poison frog, also known as the blue dart frog, is a small, beautiful and sometimes life-threatening amphibian, which was not known to scientists until several specimens were brought back from the Amazon in 1968.
This poisonous frog is one of the animals used by native people in South America. These animals hide deadly toxins under their gorgeous blue skin.
The color of the poison frog is considered a warning to potential predators: eat me and you'll die!
7. Blue Spearfish
The blue pike is the largest fish with an outstanding appearance. Its upper side (back) is blue, which can protect the color from smaller prey swimming over it.
Females tend to weigh more than males, sometimes much heavier than males: the largest females, weighing up to 1800 kg, are four meters from the end of their mouths to their caudal fins.
8. Blue and purple Macaw
The blue purple macaw is the largest flying parrot in the world. It has a life span of 60 years, with a maximum body length of 100 cm and a wingspan of 140 cm.
The blue purple macaw is almost all blue, and this beautiful parrot is very expensive, selling for more than $8000 each.
However, they are very popular in pet stores, so wild blue and purple macaws are still under great pressure to be arrested.
9. Blue Dragonfly
Dragonflies are similar to dragonflies, but smaller than dragonflies. Dragonflies are colorful in color, but blue seems to be the most common.
Not dull blue, but from deep cobalt blue to jewelry blue-green rich bright blue. It is said that they are the bluest dragonflies.
Blue damselflies can be seen in most countries in the UK and Europe. They are wildlife photographers' favorite animals. You can see the pictures and see why.
10. Blue whale
The blue whale is the largest animal that has ever lived on the earth. Adult blue whales can grow up to 33 meters long and weigh 18000 kilograms, sometimes even larger.
They're blue all over, blue gray to be exact. Blue whales used to be on the brink of extinction, and now there are 12000 in the world.
That may seem like a big number, but it is believed that before the advent of organized whaling in the 20th century, there were as many as 240000 blue whales in the world's oceans, 20 times more than today.