It is dangerous for small animals to swim in the ocean, and in the darkness around them is unknown how many killers are quietly waiting for their prey to enter the ambush circle. In addition, there are many hunters who will look for prey based on the contrast of the background light.
Therefore, how to avoid hunters finding themselves is a lesson that marine animals must learn to survive. Many marine animals have evolved near-transparent bodies for this purpose.
1. Glass squid
Glass squid is a near-transparent marine animal that lives in oceans of 200 to 1,000 meters. They live near the surface of the sea when they are young, and as they age they gradually sink into the depths of the ocean.
The only weakness of this squid is its large black eyes, which look more obvious because the body is almost undetectable. To compensate for this deficiency, the glass squid can emit a faint light to minimize the shadows around the eyes.

2. Glass octopus
Glass octopuses are about 45 cm long and live in ocean depths of 300 to 1000 m. Their bodies are almost completely transparent except for the eyes, digestive system and nerves. In the rough seas they are like a gel. To reduce the probability of predator discovery, glass octopuses even turn their eyes into elongated shapes.
3. Sea bass
This is a very primitive animal that looks like a jellyfish, but in fact they belong to distant relatives of vertebrates. They already breathe with their cheeks, but without a complete mouth, and when swimming, they open their mouths, inhale seawater, and then use their barrel-shaped bodies to filter the plankton in the water.
4, deep-sea floating silkworms
Not only transparent, but also blue fluorescent, these hairy worms are about 2 to 4 centimeters long and spread throughout the Earth's oceans, and these creatures have dense flagella that look like deep-sea centipedes. In case of danger, they release light particles to attract predators and take advantage of the opportunity to escape.
Just sauce!