Sepia is a marine animal that is part of the Mollusca order, the Cephalopoda class. It can be found in all majorities. Large sepia populations are in the Australian coast.
Sepia is a mollusc, many catalog it as fish, which is wrong.
Common European Sepia (Sepia officinalis) is the largest and most known species of sepia. It is native to Baltic, Nordic and Mediterranean. It lives on the ocean floor with mud and sand at depths of up to 200 meters.
Since they can not reach high speeds like octopuses, not even on short distances, they prefer to hunt by the ambush method.
They stay and wait until the prey comes to them. It feeds on shrimp, fish and crabs.
Once it catches the food, it is taken to the mouth and held to be consumed or crushed with the flesh. His beak is so powerful that it can break the bigger bones and bones of the fish.
A 2008 study shows that they prefer a particular type of food in particular. After birth and in the following period, they eat shrimps and crabs.
The presence of a leek at a distance of 5 m leads to a quick reflex orientation, sudden abstraction of the water in the galley chamber
Through a powerful jet, which thus pushes sepia to the prey. The arms catch the prey, and the animal suddenly returns with another jet of water now to the shelter from which it came.
Unlike octopus, the sepia has a protective coating. They have elongated body and 10 tentacles with suction cups used to catch the prey.
They reach the weight of 5 kg and the width of 60 cm. Many species do not exceed the length of 20-30 cm. The blood is pumped by 3 separate hearts. It is said that the eyes of the sepia are the most developed of the animal kingdom.
It is an aquatic animal that moves with propulsion. To move in a certain direction adds water and quickly removes it in the opposite direction.
In the brain, sheltered in a relatively solid cartilage capsule, there are millions of nerve cells, each with well-defined functions (the lobes are the largest, because their eyes are the most developed sense organs).
Because of the vision, the most important reflections of behavior, attack or defense are made. Perhaps under the impulse of the colors perceived by the eye is ordered the coloration of the body that is similar to the external one.
The eyes are located on both sides of the head and they are very similar to those of mammals and humans, they are yellow and very expressive. The iris is pigmented and the size of the pupil is adjusted by the amount of light in the environment.
They have a very tactile sensitivity. In the darkness they distinguish between many shapes, a mound of crab thrown among the stones that they catch with their arms, pulls it away, leads them to shelter, where they always turn it in their arms, as if asking: what the crab is this?
Due to its ability to change its color to camouflage, it is called the “sea chameleon”. It changes color very easily depending on where it sits: between algae, sand, etc.
When attacked, it removes a black substance from an “ink gland” that reduces visibility in water. It can be removed from predators.
The natural predators of the sepia are dolphins, swordfish, shark whales and other sepia, or larger fish.
The arm movements are very complex and can be compared to human finger movements. Each arm has general tasks and special tasks: some get stones and lead them to the shelter, others inhabitate the prey that has passed.
Recent studies confirm that sepia is the smartest invertebrate.
Sepia is a tasty food that can be consumed in oven, grill, fried, marinated, filled or pane.
They have left an important trace in the culture of mankind because before they were writing with sepia ink. Besides the ink that is used to make paints, sepia has a bone, called the “cuttle bone” that is very rich in calcium.
The blade bone was also used to polish metal or toothpaste (gloss).
Japanese researchers have found that sebum fat has antibiotic properties.
Sepia is also known as the only organic painting of brown paints.
The sepia sleeps both day and night. They remain quiet, their color opens, the number of breaths decreases from 30 to 12 per minute.
Primordial for the survival of a sepia is the temperature, depending on it she can live 1.5 years, 2 or more.
Great attention to those who have sepia in aquariums and want to reproduce them. Carefully choose sex because if you hit two males they will beat. There is a good chance that a male and female will argue because they do not have optimal conditions, but two sepia of the same sex almost certainly argue.
After mating, the female will deposit one egg for longer. After laying, the eggs will begin to hatch after about 50 days, depending on the temperature.
It is assumed that the male grabs the female with the tentacles and twists it so that it faces the front. Then, with the help of a tentacle, he inserts the semen into an opening near the female’s mouth.